./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/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_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 067fe51884f92ae3774f211cf9d4291369df85b7690d3eee54cd23a70c2ea301 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:09:04,330 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:09:04,406 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 07:09:04,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:09:04,413 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:09:04,439 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:09:04,440 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:09:04,441 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:09:04,442 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:09:04,442 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:09:04,443 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 07:09:04,444 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 07:09:04,444 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:09:04,445 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:09:04,446 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:09:04,446 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:09:04,447 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 07:09:04,447 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 07:09:04,448 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 07:09:04,448 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 07:09:04,449 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:09:04,449 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 07:09:04,450 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 07:09:04,450 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 07:09:04,451 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 07:09:04,451 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 07:09:04,452 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:09:04,452 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:09:04,452 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:09:04,453 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 07:09:04,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 07:09:04,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:09:04,454 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:09:04,455 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 07:09:04,455 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 07:09:04,455 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 07:09:04,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 07:09:04,456 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 07:09:04,456 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 07:09:04,457 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 07:09:04,457 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 07:09:04,457 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 07:09:04,457 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_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 067fe51884f92ae3774f211cf9d4291369df85b7690d3eee54cd23a70c2ea301 [2023-11-29 07:09:04,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:09:04,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:09:04,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:09:04,710 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:09:04,711 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:09:04,712 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c [2023-11-29 07:09:07,450 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:09:07,666 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:09:07,667 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c [2023-11-29 07:09:07,680 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/data/357e9efc2/65bfffbc6d9c4651ab5cc63511f2a396/FLAG0bffe2be4 [2023-11-29 07:09:07,693 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/data/357e9efc2/65bfffbc6d9c4651ab5cc63511f2a396 [2023-11-29 07:09:07,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:09:07,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:09:07,699 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:09:07,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:09:07,704 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:09:07,705 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:09:07" (1/1) ... [2023-11-29 07:09:07,706 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@542e84c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:07, skipping insertion in model container [2023-11-29 07:09:07,706 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:09:07" (1/1) ... [2023-11-29 07:09:07,761 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:09:07,883 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_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c[646,659] [2023-11-29 07:09:07,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:09:08,008 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:09:08,020 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_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/sv-benchmarks/c/systemc/mem_slave_tlm.5.cil.c[646,659] [2023-11-29 07:09:08,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:09:08,106 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:09:08,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08 WrapperNode [2023-11-29 07:09:08,106 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:09:08,107 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:09:08,107 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:09:08,107 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:09:08,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2023-11-29 07:09:08,125 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2023-11-29 07:09:08,168 INFO L138 Inliner]: procedures = 19, calls = 18, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 867 [2023-11-29 07:09:08,168 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:09:08,169 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:09:08,169 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:09:08,169 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:09:08,181 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2023-11-29 07:09:08,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2023-11-29 07:09:08,187 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2023-11-29 07:09:08,206 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 07:09:08,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2023-11-29 07:09:08,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2023-11-29 07:09:08,219 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2023-11-29 07:09:08,234 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2023-11-29 07:09:08,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2023-11-29 07:09:08,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2023-11-29 07:09:08,246 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:09:08,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:09:08,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:09:08,247 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:09:08,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2023-11-29 07:09:08,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:09:08,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:08,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 07:09:08,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 07:09:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 07:09:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 07:09:08,360 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-29 07:09:08,360 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-29 07:09:08,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:09:08,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:09:08,454 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:09:08,456 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 07:09:09,124 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 07:09:09,182 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 07:09:09,183 INFO L309 CfgBuilder]: Removed 13 assume(true) statements. [2023-11-29 07:09:09,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:09:09 BoogieIcfgContainer [2023-11-29 07:09:09,183 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 07:09:09,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 07:09:09,186 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 07:09:09,188 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 07:09:09,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:09:07" (1/3) ... [2023-11-29 07:09:09,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1610adc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:09:09, skipping insertion in model container [2023-11-29 07:09:09,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (2/3) ... [2023-11-29 07:09:09,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1610adc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:09:09, skipping insertion in model container [2023-11-29 07:09:09,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:09:09" (3/3) ... [2023-11-29 07:09:09,191 INFO L112 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.5.cil.c [2023-11-29 07:09:09,207 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 07:09:09,207 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 07:09:09,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 07:09:09,265 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;@5f57cc2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 07:09:09,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 07:09:09,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 247 states have (on average 1.9392712550607287) internal successors, (479), 253 states have internal predecessors, (479), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 07:09:09,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 07:09:09,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:09,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:09,283 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:09,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:09,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1472031047, now seen corresponding path program 1 times [2023-11-29 07:09:09,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:09,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557682541] [2023-11-29 07:09:09,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:09,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:09,526 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 07:09:09,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:09,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557682541] [2023-11-29 07:09:09,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557682541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:09,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:09,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:09:09,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332653172] [2023-11-29 07:09:09,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:09,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:09:09,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:09,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:09:09,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:09,564 INFO L87 Difference]: Start difference. First operand has 255 states, 247 states have (on average 1.9392712550607287) internal successors, (479), 253 states have internal predecessors, (479), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:09,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:09,907 INFO L93 Difference]: Finished difference Result 674 states and 1291 transitions. [2023-11-29 07:09:09,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:09:09,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-29 07:09:09,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:09,923 INFO L225 Difference]: With dead ends: 674 [2023-11-29 07:09:09,923 INFO L226 Difference]: Without dead ends: 419 [2023-11-29 07:09:09,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:09,931 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 255 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:09,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 718 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 07:09:09,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-11-29 07:09:09,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 412. [2023-11-29 07:09:09,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 406 states have (on average 1.6477832512315271) internal successors, (669), 410 states have internal predecessors, (669), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:09,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 674 transitions. [2023-11-29 07:09:09,990 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 674 transitions. Word has length 26 [2023-11-29 07:09:09,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:09,991 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 674 transitions. [2023-11-29 07:09:09,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:09,991 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 674 transitions. [2023-11-29 07:09:09,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 07:09:09,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:09,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:09,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 07:09:09,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:09,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:09,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1883838620, now seen corresponding path program 1 times [2023-11-29 07:09:09,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:09,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722819263] [2023-11-29 07:09:09,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:09,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:10,059 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 07:09:10,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:10,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722819263] [2023-11-29 07:09:10,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722819263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:10,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:10,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:09:10,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20468830] [2023-11-29 07:09:10,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:10,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:09:10,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:10,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:09:10,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:10,063 INFO L87 Difference]: Start difference. First operand 412 states and 674 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:10,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:10,223 INFO L93 Difference]: Finished difference Result 1084 states and 1800 transitions. [2023-11-29 07:09:10,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:09:10,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-29 07:09:10,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:10,229 INFO L225 Difference]: With dead ends: 1084 [2023-11-29 07:09:10,229 INFO L226 Difference]: Without dead ends: 685 [2023-11-29 07:09:10,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:10,232 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 320 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:10,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 948 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:09:10,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-11-29 07:09:10,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 678. [2023-11-29 07:09:10,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 672 states have (on average 1.6800595238095237) internal successors, (1129), 676 states have internal predecessors, (1129), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:10,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1134 transitions. [2023-11-29 07:09:10,269 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1134 transitions. Word has length 39 [2023-11-29 07:09:10,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:10,269 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 1134 transitions. [2023-11-29 07:09:10,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:10,270 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1134 transitions. [2023-11-29 07:09:10,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 07:09:10,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:10,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:10,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 07:09:10,273 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:10,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:10,274 INFO L85 PathProgramCache]: Analyzing trace with hash 886388077, now seen corresponding path program 1 times [2023-11-29 07:09:10,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:10,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511623277] [2023-11-29 07:09:10,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:10,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:10,330 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 07:09:10,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:10,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511623277] [2023-11-29 07:09:10,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511623277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:10,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:10,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:09:10,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268643897] [2023-11-29 07:09:10,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:10,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:09:10,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:10,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:09:10,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:10,334 INFO L87 Difference]: Start difference. First operand 678 states and 1134 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:10,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:10,437 INFO L93 Difference]: Finished difference Result 1692 states and 2831 transitions. [2023-11-29 07:09:10,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:09:10,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-11-29 07:09:10,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:10,445 INFO L225 Difference]: With dead ends: 1692 [2023-11-29 07:09:10,445 INFO L226 Difference]: Without dead ends: 1038 [2023-11-29 07:09:10,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:10,448 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 344 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:10,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 746 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:09:10,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2023-11-29 07:09:10,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1027. [2023-11-29 07:09:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1021 states have (on average 1.6718903036238981) internal successors, (1707), 1025 states have internal predecessors, (1707), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:10,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1712 transitions. [2023-11-29 07:09:10,497 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1712 transitions. Word has length 40 [2023-11-29 07:09:10,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:10,498 INFO L495 AbstractCegarLoop]: Abstraction has 1027 states and 1712 transitions. [2023-11-29 07:09:10,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:10,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1712 transitions. [2023-11-29 07:09:10,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 07:09:10,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:10,500 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:10,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 07:09:10,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:10,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:10,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1060713339, now seen corresponding path program 1 times [2023-11-29 07:09:10,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:10,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717946105] [2023-11-29 07:09:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:10,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:09:10,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:10,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717946105] [2023-11-29 07:09:10,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717946105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:10,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:10,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:09:10,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654958835] [2023-11-29 07:09:10,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:10,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:09:10,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:10,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:09:10,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:09:10,602 INFO L87 Difference]: Start difference. First operand 1027 states and 1712 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:11,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:11,143 INFO L93 Difference]: Finished difference Result 3650 states and 6108 transitions. [2023-11-29 07:09:11,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 07:09:11,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-11-29 07:09:11,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:11,160 INFO L225 Difference]: With dead ends: 3650 [2023-11-29 07:09:11,160 INFO L226 Difference]: Without dead ends: 2647 [2023-11-29 07:09:11,162 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 07:09:11,163 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1133 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:11,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 1519 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:09:11,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2023-11-29 07:09:11,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2149. [2023-11-29 07:09:11,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 2143 states have (on average 1.6719552029864675) internal successors, (3583), 2147 states have internal predecessors, (3583), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:11,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3588 transitions. [2023-11-29 07:09:11,290 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3588 transitions. Word has length 43 [2023-11-29 07:09:11,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:11,290 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 3588 transitions. [2023-11-29 07:09:11,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:11,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3588 transitions. [2023-11-29 07:09:11,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 07:09:11,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:11,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:11,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 07:09:11,292 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:11,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:11,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1697515514, now seen corresponding path program 1 times [2023-11-29 07:09:11,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:11,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235554267] [2023-11-29 07:09:11,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:11,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:11,340 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 07:09:11,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:11,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235554267] [2023-11-29 07:09:11,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235554267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:11,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:11,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:09:11,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191296891] [2023-11-29 07:09:11,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:11,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:09:11,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:11,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:09:11,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:11,342 INFO L87 Difference]: Start difference. First operand 2149 states and 3588 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:11,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:11,583 INFO L93 Difference]: Finished difference Result 6007 states and 9996 transitions. [2023-11-29 07:09:11,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:09:11,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-29 07:09:11,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:11,607 INFO L225 Difference]: With dead ends: 6007 [2023-11-29 07:09:11,607 INFO L226 Difference]: Without dead ends: 3876 [2023-11-29 07:09:11,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:11,612 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 380 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:11,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 720 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:09:11,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3876 states. [2023-11-29 07:09:11,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3876 to 3809. [2023-11-29 07:09:11,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3809 states, 3803 states have (on average 1.638706284512227) internal successors, (6232), 3807 states have internal predecessors, (6232), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:11,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3809 states to 3809 states and 6237 transitions. [2023-11-29 07:09:11,811 INFO L78 Accepts]: Start accepts. Automaton has 3809 states and 6237 transitions. Word has length 50 [2023-11-29 07:09:11,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:11,812 INFO L495 AbstractCegarLoop]: Abstraction has 3809 states and 6237 transitions. [2023-11-29 07:09:11,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:11,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3809 states and 6237 transitions. [2023-11-29 07:09:11,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 07:09:11,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:11,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:11,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 07:09:11,814 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:11,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:11,814 INFO L85 PathProgramCache]: Analyzing trace with hash -452667645, now seen corresponding path program 1 times [2023-11-29 07:09:11,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:11,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841215803] [2023-11-29 07:09:11,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:11,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:11,861 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 07:09:11,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:11,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841215803] [2023-11-29 07:09:11,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841215803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:11,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:11,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:09:11,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198182675] [2023-11-29 07:09:11,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:11,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:09:11,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:11,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:09:11,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:11,863 INFO L87 Difference]: Start difference. First operand 3809 states and 6237 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:12,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:12,114 INFO L93 Difference]: Finished difference Result 9062 states and 14802 transitions. [2023-11-29 07:09:12,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:09:12,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-29 07:09:12,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:12,138 INFO L225 Difference]: With dead ends: 9062 [2023-11-29 07:09:12,139 INFO L226 Difference]: Without dead ends: 5275 [2023-11-29 07:09:12,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:12,143 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 359 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:12,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 657 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:09:12,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5275 states. [2023-11-29 07:09:12,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5275 to 4999. [2023-11-29 07:09:12,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4999 states, 4993 states have (on average 1.621470058081314) internal successors, (8096), 4997 states have internal predecessors, (8096), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:12,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4999 states to 4999 states and 8101 transitions. [2023-11-29 07:09:12,297 INFO L78 Accepts]: Start accepts. Automaton has 4999 states and 8101 transitions. Word has length 50 [2023-11-29 07:09:12,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:12,298 INFO L495 AbstractCegarLoop]: Abstraction has 4999 states and 8101 transitions. [2023-11-29 07:09:12,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:12,298 INFO L276 IsEmpty]: Start isEmpty. Operand 4999 states and 8101 transitions. [2023-11-29 07:09:12,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 07:09:12,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:12,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:12,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 07:09:12,301 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:12,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:12,302 INFO L85 PathProgramCache]: Analyzing trace with hash 16702740, now seen corresponding path program 1 times [2023-11-29 07:09:12,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:12,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391630622] [2023-11-29 07:09:12,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:12,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:12,375 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 07:09:12,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:12,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391630622] [2023-11-29 07:09:12,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391630622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:12,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:12,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:09:12,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597529644] [2023-11-29 07:09:12,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:12,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:09:12,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:12,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:09:12,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:12,378 INFO L87 Difference]: Start difference. First operand 4999 states and 8101 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:12,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:12,836 INFO L93 Difference]: Finished difference Result 12099 states and 19697 transitions. [2023-11-29 07:09:12,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:09:12,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 07:09:12,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:12,869 INFO L225 Difference]: With dead ends: 12099 [2023-11-29 07:09:12,869 INFO L226 Difference]: Without dead ends: 7122 [2023-11-29 07:09:12,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:12,876 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 245 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:12,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 807 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 07:09:12,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7122 states. [2023-11-29 07:09:13,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7122 to 5783. [2023-11-29 07:09:13,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5783 states, 5777 states have (on average 1.5688073394495412) internal successors, (9063), 5781 states have internal predecessors, (9063), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5783 states to 5783 states and 9068 transitions. [2023-11-29 07:09:13,120 INFO L78 Accepts]: Start accepts. Automaton has 5783 states and 9068 transitions. Word has length 58 [2023-11-29 07:09:13,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:13,120 INFO L495 AbstractCegarLoop]: Abstraction has 5783 states and 9068 transitions. [2023-11-29 07:09:13,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:13,120 INFO L276 IsEmpty]: Start isEmpty. Operand 5783 states and 9068 transitions. [2023-11-29 07:09:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-29 07:09:13,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:13,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:13,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 07:09:13,124 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:13,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:13,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1400755736, now seen corresponding path program 1 times [2023-11-29 07:09:13,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:13,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864813196] [2023-11-29 07:09:13,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:13,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:13,191 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 07:09:13,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:13,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864813196] [2023-11-29 07:09:13,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864813196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:13,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:13,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:09:13,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469132858] [2023-11-29 07:09:13,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:13,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:09:13,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:13,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:09:13,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:13,196 INFO L87 Difference]: Start difference. First operand 5783 states and 9068 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:13,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:13,412 INFO L93 Difference]: Finished difference Result 11410 states and 17914 transitions. [2023-11-29 07:09:13,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:09:13,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-11-29 07:09:13,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:13,440 INFO L225 Difference]: With dead ends: 11410 [2023-11-29 07:09:13,440 INFO L226 Difference]: Without dead ends: 5649 [2023-11-29 07:09:13,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:13,447 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 336 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:13,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 409 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:09:13,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5649 states. [2023-11-29 07:09:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5649 to 5649. [2023-11-29 07:09:13,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5649 states, 5643 states have (on average 1.5498848130427079) internal successors, (8746), 5647 states have internal predecessors, (8746), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:13,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5649 states to 5649 states and 8751 transitions. [2023-11-29 07:09:13,672 INFO L78 Accepts]: Start accepts. Automaton has 5649 states and 8751 transitions. Word has length 60 [2023-11-29 07:09:13,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:13,672 INFO L495 AbstractCegarLoop]: Abstraction has 5649 states and 8751 transitions. [2023-11-29 07:09:13,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:13,672 INFO L276 IsEmpty]: Start isEmpty. Operand 5649 states and 8751 transitions. [2023-11-29 07:09:13,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 07:09:13,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:13,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:13,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 07:09:13,676 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:13,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:13,677 INFO L85 PathProgramCache]: Analyzing trace with hash -786114174, now seen corresponding path program 1 times [2023-11-29 07:09:13,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:13,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543316147] [2023-11-29 07:09:13,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:13,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:13,740 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 07:09:13,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:13,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543316147] [2023-11-29 07:09:13,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543316147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:13,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:13,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:09:13,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198989106] [2023-11-29 07:09:13,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:13,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:09:13,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:13,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:09:13,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:13,743 INFO L87 Difference]: Start difference. First operand 5649 states and 8751 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:13,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:13,926 INFO L93 Difference]: Finished difference Result 10851 states and 16906 transitions. [2023-11-29 07:09:13,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:09:13,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-11-29 07:09:13,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:13,942 INFO L225 Difference]: With dead ends: 10851 [2023-11-29 07:09:13,942 INFO L226 Difference]: Without dead ends: 5224 [2023-11-29 07:09:13,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:13,952 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 150 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:13,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 848 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:09:13,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5224 states. [2023-11-29 07:09:14,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5224 to 4557. [2023-11-29 07:09:14,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4557 states, 4551 states have (on average 1.5713030103274006) internal successors, (7151), 4555 states have internal predecessors, (7151), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:14,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4557 states to 4557 states and 7156 transitions. [2023-11-29 07:09:14,184 INFO L78 Accepts]: Start accepts. Automaton has 4557 states and 7156 transitions. Word has length 61 [2023-11-29 07:09:14,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:14,184 INFO L495 AbstractCegarLoop]: Abstraction has 4557 states and 7156 transitions. [2023-11-29 07:09:14,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:14,185 INFO L276 IsEmpty]: Start isEmpty. Operand 4557 states and 7156 transitions. [2023-11-29 07:09:14,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 07:09:14,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:14,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:14,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 07:09:14,187 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:14,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:14,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1290224443, now seen corresponding path program 1 times [2023-11-29 07:09:14,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:14,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656359545] [2023-11-29 07:09:14,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:14,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:14,285 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 07:09:14,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:14,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656359545] [2023-11-29 07:09:14,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656359545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:14,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:14,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 07:09:14,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030595649] [2023-11-29 07:09:14,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:14,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 07:09:14,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:14,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 07:09:14,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:09:14,287 INFO L87 Difference]: Start difference. First operand 4557 states and 7156 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:14,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:14,950 INFO L93 Difference]: Finished difference Result 13232 states and 20735 transitions. [2023-11-29 07:09:14,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 07:09:14,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-11-29 07:09:14,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:14,972 INFO L225 Difference]: With dead ends: 13232 [2023-11-29 07:09:14,972 INFO L226 Difference]: Without dead ends: 8877 [2023-11-29 07:09:14,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:09:14,982 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 926 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:14,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 2225 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:09:14,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8877 states. [2023-11-29 07:09:15,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8877 to 6101. [2023-11-29 07:09:15,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6101 states, 6095 states have (on average 1.5689909762100083) internal successors, (9563), 6099 states have internal predecessors, (9563), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6101 states to 6101 states and 9568 transitions. [2023-11-29 07:09:15,250 INFO L78 Accepts]: Start accepts. Automaton has 6101 states and 9568 transitions. Word has length 63 [2023-11-29 07:09:15,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:15,251 INFO L495 AbstractCegarLoop]: Abstraction has 6101 states and 9568 transitions. [2023-11-29 07:09:15,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:15,252 INFO L276 IsEmpty]: Start isEmpty. Operand 6101 states and 9568 transitions. [2023-11-29 07:09:15,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 07:09:15,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:15,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:15,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 07:09:15,254 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:15,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:15,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1825512345, now seen corresponding path program 1 times [2023-11-29 07:09:15,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:15,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965718812] [2023-11-29 07:09:15,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:15,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:15,357 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 07:09:15,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:15,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965718812] [2023-11-29 07:09:15,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965718812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:15,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:15,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:09:15,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335524409] [2023-11-29 07:09:15,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:15,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:09:15,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:15,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:09:15,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:09:15,359 INFO L87 Difference]: Start difference. First operand 6101 states and 9568 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:15,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:15,876 INFO L93 Difference]: Finished difference Result 14650 states and 22775 transitions. [2023-11-29 07:09:15,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 07:09:15,876 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-29 07:09:15,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:15,897 INFO L225 Difference]: With dead ends: 14650 [2023-11-29 07:09:15,897 INFO L226 Difference]: Without dead ends: 8751 [2023-11-29 07:09:15,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:09:15,905 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 812 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:15,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 2770 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:09:15,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8751 states. [2023-11-29 07:09:16,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8751 to 6441. [2023-11-29 07:09:16,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6441 states, 6435 states have (on average 1.5575757575757576) internal successors, (10023), 6439 states have internal predecessors, (10023), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:16,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6441 states to 6441 states and 10028 transitions. [2023-11-29 07:09:16,251 INFO L78 Accepts]: Start accepts. Automaton has 6441 states and 10028 transitions. Word has length 64 [2023-11-29 07:09:16,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:16,251 INFO L495 AbstractCegarLoop]: Abstraction has 6441 states and 10028 transitions. [2023-11-29 07:09:16,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:16,251 INFO L276 IsEmpty]: Start isEmpty. Operand 6441 states and 10028 transitions. [2023-11-29 07:09:16,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 07:09:16,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:16,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:09:16,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 07:09:16,255 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:16,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:16,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1457483404, now seen corresponding path program 1 times [2023-11-29 07:09:16,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:16,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298880989] [2023-11-29 07:09:16,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:16,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:16,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:09:16,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:16,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298880989] [2023-11-29 07:09:16,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298880989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:16,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:16,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:09:16,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412626808] [2023-11-29 07:09:16,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:16,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:09:16,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:16,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:09:16,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:16,301 INFO L87 Difference]: Start difference. First operand 6441 states and 10028 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:16,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:16,664 INFO L93 Difference]: Finished difference Result 13693 states and 21286 transitions. [2023-11-29 07:09:16,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:09:16,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-11-29 07:09:16,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:16,682 INFO L225 Difference]: With dead ends: 13693 [2023-11-29 07:09:16,683 INFO L226 Difference]: Without dead ends: 7272 [2023-11-29 07:09:16,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:16,691 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 138 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:16,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 756 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:09:16,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2023-11-29 07:09:16,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7186. [2023-11-29 07:09:16,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7186 states, 7180 states have (on average 1.5532033426183844) internal successors, (11152), 7184 states have internal predecessors, (11152), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:16,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7186 states to 7186 states and 11157 transitions. [2023-11-29 07:09:16,989 INFO L78 Accepts]: Start accepts. Automaton has 7186 states and 11157 transitions. Word has length 74 [2023-11-29 07:09:16,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:16,989 INFO L495 AbstractCegarLoop]: Abstraction has 7186 states and 11157 transitions. [2023-11-29 07:09:16,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:16,989 INFO L276 IsEmpty]: Start isEmpty. Operand 7186 states and 11157 transitions. [2023-11-29 07:09:16,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 07:09:16,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:16,992 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:09:16,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 07:09:16,992 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:16,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:16,993 INFO L85 PathProgramCache]: Analyzing trace with hash 413275915, now seen corresponding path program 1 times [2023-11-29 07:09:16,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:16,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822713003] [2023-11-29 07:09:16,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:16,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:17,044 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:09:17,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:17,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822713003] [2023-11-29 07:09:17,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822713003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:17,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:17,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:09:17,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81124886] [2023-11-29 07:09:17,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:17,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:09:17,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:17,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:09:17,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:09:17,046 INFO L87 Difference]: Start difference. First operand 7186 states and 11157 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:17,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:17,680 INFO L93 Difference]: Finished difference Result 18675 states and 28730 transitions. [2023-11-29 07:09:17,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 07:09:17,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-11-29 07:09:17,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:17,707 INFO L225 Difference]: With dead ends: 18675 [2023-11-29 07:09:17,707 INFO L226 Difference]: Without dead ends: 11376 [2023-11-29 07:09:17,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 07:09:17,714 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 616 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:17,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 1155 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 07:09:17,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11376 states. [2023-11-29 07:09:18,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11376 to 9903. [2023-11-29 07:09:18,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9903 states, 9897 states have (on average 1.5124785288471254) internal successors, (14969), 9901 states have internal predecessors, (14969), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:18,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9903 states to 9903 states and 14974 transitions. [2023-11-29 07:09:18,159 INFO L78 Accepts]: Start accepts. Automaton has 9903 states and 14974 transitions. Word has length 85 [2023-11-29 07:09:18,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:18,159 INFO L495 AbstractCegarLoop]: Abstraction has 9903 states and 14974 transitions. [2023-11-29 07:09:18,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:18,159 INFO L276 IsEmpty]: Start isEmpty. Operand 9903 states and 14974 transitions. [2023-11-29 07:09:18,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 07:09:18,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:18,163 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:09:18,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 07:09:18,164 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:18,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:18,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1210850493, now seen corresponding path program 1 times [2023-11-29 07:09:18,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:18,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386862683] [2023-11-29 07:09:18,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:18,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:09:18,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:18,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386862683] [2023-11-29 07:09:18,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386862683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:18,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:18,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:09:18,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454570314] [2023-11-29 07:09:18,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:18,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:09:18,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:18,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:09:18,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:18,247 INFO L87 Difference]: Start difference. First operand 9903 states and 14974 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:18,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:18,568 INFO L93 Difference]: Finished difference Result 14064 states and 21298 transitions. [2023-11-29 07:09:18,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:09:18,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-29 07:09:18,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:18,578 INFO L225 Difference]: With dead ends: 14064 [2023-11-29 07:09:18,578 INFO L226 Difference]: Without dead ends: 4171 [2023-11-29 07:09:18,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:18,590 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 331 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:18,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 473 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:09:18,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4171 states. [2023-11-29 07:09:18,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4171 to 4113. [2023-11-29 07:09:18,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4113 states, 4107 states have (on average 1.4088142196250304) internal successors, (5786), 4111 states have internal predecessors, (5786), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:18,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 5791 transitions. [2023-11-29 07:09:18,827 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 5791 transitions. Word has length 91 [2023-11-29 07:09:18,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:18,827 INFO L495 AbstractCegarLoop]: Abstraction has 4113 states and 5791 transitions. [2023-11-29 07:09:18,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:18,828 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 5791 transitions. [2023-11-29 07:09:18,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 07:09:18,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:18,830 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:09:18,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 07:09:18,830 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:18,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:18,831 INFO L85 PathProgramCache]: Analyzing trace with hash 183287898, now seen corresponding path program 1 times [2023-11-29 07:09:18,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:18,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467012885] [2023-11-29 07:09:18,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:18,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:09:18,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:18,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467012885] [2023-11-29 07:09:18,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467012885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:18,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:18,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 07:09:18,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869954118] [2023-11-29 07:09:18,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:18,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 07:09:18,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:18,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 07:09:18,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:09:18,926 INFO L87 Difference]: Start difference. First operand 4113 states and 5791 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:19,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:19,365 INFO L93 Difference]: Finished difference Result 9686 states and 13608 transitions. [2023-11-29 07:09:19,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 07:09:19,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-11-29 07:09:19,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:19,375 INFO L225 Difference]: With dead ends: 9686 [2023-11-29 07:09:19,375 INFO L226 Difference]: Without dead ends: 5737 [2023-11-29 07:09:19,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:09:19,380 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 533 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:19,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 2175 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:09:19,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5737 states. [2023-11-29 07:09:19,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5737 to 4115. [2023-11-29 07:09:19,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4115 states, 4109 states have (on average 1.4056948162569969) internal successors, (5776), 4113 states have internal predecessors, (5776), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:19,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4115 states to 4115 states and 5781 transitions. [2023-11-29 07:09:19,557 INFO L78 Accepts]: Start accepts. Automaton has 4115 states and 5781 transitions. Word has length 95 [2023-11-29 07:09:19,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:19,557 INFO L495 AbstractCegarLoop]: Abstraction has 4115 states and 5781 transitions. [2023-11-29 07:09:19,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:19,557 INFO L276 IsEmpty]: Start isEmpty. Operand 4115 states and 5781 transitions. [2023-11-29 07:09:19,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 07:09:19,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:19,559 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:09:19,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 07:09:19,560 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:19,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:19,560 INFO L85 PathProgramCache]: Analyzing trace with hash 27940885, now seen corresponding path program 1 times [2023-11-29 07:09:19,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:19,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675183013] [2023-11-29 07:09:19,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:19,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:19,649 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:09:19,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:19,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675183013] [2023-11-29 07:09:19,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675183013] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:09:19,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919693031] [2023-11-29 07:09:19,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:19,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:19,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:19,655 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:19,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 07:09:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:19,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:09:19,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:09:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 07:09:19,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:09:19,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919693031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:19,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:09:19,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 07:09:19,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226524199] [2023-11-29 07:09:19,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:19,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:09:19,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:19,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:09:19,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:09:19,898 INFO L87 Difference]: Start difference. First operand 4115 states and 5781 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:20,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:20,155 INFO L93 Difference]: Finished difference Result 5274 states and 7402 transitions. [2023-11-29 07:09:20,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:09:20,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-11-29 07:09:20,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:20,162 INFO L225 Difference]: With dead ends: 5274 [2023-11-29 07:09:20,162 INFO L226 Difference]: Without dead ends: 5270 [2023-11-29 07:09:20,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:09:20,165 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 227 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:20,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 743 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:09:20,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5270 states. [2023-11-29 07:09:20,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5270 to 5132. [2023-11-29 07:09:20,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5132 states, 5126 states have (on average 1.4106515801794772) internal successors, (7231), 5130 states have internal predecessors, (7231), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5132 states to 5132 states and 7236 transitions. [2023-11-29 07:09:20,319 INFO L78 Accepts]: Start accepts. Automaton has 5132 states and 7236 transitions. Word has length 97 [2023-11-29 07:09:20,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:20,319 INFO L495 AbstractCegarLoop]: Abstraction has 5132 states and 7236 transitions. [2023-11-29 07:09:20,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:20,319 INFO L276 IsEmpty]: Start isEmpty. Operand 5132 states and 7236 transitions. [2023-11-29 07:09:20,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-29 07:09:20,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:20,323 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:09:20,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 07:09:20,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 07:09:20,529 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:20,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:20,530 INFO L85 PathProgramCache]: Analyzing trace with hash 615808692, now seen corresponding path program 1 times [2023-11-29 07:09:20,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:20,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308425813] [2023-11-29 07:09:20,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:20,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:09:20,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:20,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308425813] [2023-11-29 07:09:20,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308425813] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:09:20,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73457383] [2023-11-29 07:09:20,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:20,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:20,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:20,663 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:20,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 07:09:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:20,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:09:20,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:09:20,898 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 07:09:20,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:09:20,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73457383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:20,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:09:20,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 07:09:20,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333592307] [2023-11-29 07:09:20,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:20,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:09:20,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:20,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:09:20,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:09:20,901 INFO L87 Difference]: Start difference. First operand 5132 states and 7236 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:21,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:21,082 INFO L93 Difference]: Finished difference Result 9132 states and 12950 transitions. [2023-11-29 07:09:21,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:09:21,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-11-29 07:09:21,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:21,087 INFO L225 Difference]: With dead ends: 9132 [2023-11-29 07:09:21,088 INFO L226 Difference]: Without dead ends: 4011 [2023-11-29 07:09:21,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:09:21,093 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 257 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:21,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 392 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:09:21,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2023-11-29 07:09:21,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 3676. [2023-11-29 07:09:21,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3670 states have (on average 1.391825613079019) internal successors, (5108), 3674 states have internal predecessors, (5108), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:21,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5113 transitions. [2023-11-29 07:09:21,242 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5113 transitions. Word has length 151 [2023-11-29 07:09:21,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:21,243 INFO L495 AbstractCegarLoop]: Abstraction has 3676 states and 5113 transitions. [2023-11-29 07:09:21,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:21,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5113 transitions. [2023-11-29 07:09:21,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-29 07:09:21,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:21,246 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:09:21,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 07:09:21,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 07:09:21,447 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:21,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:21,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1118481984, now seen corresponding path program 1 times [2023-11-29 07:09:21,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:21,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177116516] [2023-11-29 07:09:21,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:21,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:21,590 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 07:09:21,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:21,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177116516] [2023-11-29 07:09:21,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177116516] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:09:21,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114856690] [2023-11-29 07:09:21,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:21,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:21,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:21,592 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:21,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 07:09:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:21,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:09:21,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:09:21,780 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 07:09:21,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:09:21,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114856690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:21,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:09:21,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 07:09:21,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512616086] [2023-11-29 07:09:21,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:21,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:09:21,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:21,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:09:21,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:09:21,783 INFO L87 Difference]: Start difference. First operand 3676 states and 5113 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:21,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:21,982 INFO L93 Difference]: Finished difference Result 7189 states and 10048 transitions. [2023-11-29 07:09:21,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:09:21,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-11-29 07:09:21,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:21,986 INFO L225 Difference]: With dead ends: 7189 [2023-11-29 07:09:21,987 INFO L226 Difference]: Without dead ends: 3676 [2023-11-29 07:09:21,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:09:21,991 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 267 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:21,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 364 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:09:21,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2023-11-29 07:09:22,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3676. [2023-11-29 07:09:22,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3670 states have (on average 1.3536784741144414) internal successors, (4968), 3674 states have internal predecessors, (4968), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 4973 transitions. [2023-11-29 07:09:22,145 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 4973 transitions. Word has length 154 [2023-11-29 07:09:22,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:22,146 INFO L495 AbstractCegarLoop]: Abstraction has 3676 states and 4973 transitions. [2023-11-29 07:09:22,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:22,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 4973 transitions. [2023-11-29 07:09:22,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-29 07:09:22,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:22,149 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:09:22,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 07:09:22,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 07:09:22,360 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:22,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:22,360 INFO L85 PathProgramCache]: Analyzing trace with hash 422364721, now seen corresponding path program 1 times [2023-11-29 07:09:22,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:22,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836132037] [2023-11-29 07:09:22,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:22,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 07:09:22,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:22,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836132037] [2023-11-29 07:09:22,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836132037] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:09:22,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302936624] [2023-11-29 07:09:22,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:22,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:22,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:22,503 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:22,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 07:09:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:22,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:09:22,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:09:22,660 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 07:09:22,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:09:22,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302936624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:22,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:09:22,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 07:09:22,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893546904] [2023-11-29 07:09:22,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:22,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:09:22,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:22,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:09:22,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:09:22,663 INFO L87 Difference]: Start difference. First operand 3676 states and 4973 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:23,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:23,091 INFO L93 Difference]: Finished difference Result 8510 states and 11697 transitions. [2023-11-29 07:09:23,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:09:23,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2023-11-29 07:09:23,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:23,097 INFO L225 Difference]: With dead ends: 8510 [2023-11-29 07:09:23,097 INFO L226 Difference]: Without dead ends: 4997 [2023-11-29 07:09:23,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:09:23,101 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 202 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:23,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 608 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 07:09:23,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4997 states. [2023-11-29 07:09:23,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4997 to 4661. [2023-11-29 07:09:23,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4661 states, 4655 states have (on average 1.319656283566058) internal successors, (6143), 4659 states have internal predecessors, (6143), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:23,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4661 states to 4661 states and 6148 transitions. [2023-11-29 07:09:23,255 INFO L78 Accepts]: Start accepts. Automaton has 4661 states and 6148 transitions. Word has length 155 [2023-11-29 07:09:23,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:23,255 INFO L495 AbstractCegarLoop]: Abstraction has 4661 states and 6148 transitions. [2023-11-29 07:09:23,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:23,255 INFO L276 IsEmpty]: Start isEmpty. Operand 4661 states and 6148 transitions. [2023-11-29 07:09:23,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-29 07:09:23,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:23,257 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:09:23,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 07:09:23,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:23,459 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:23,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:23,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1110151312, now seen corresponding path program 1 times [2023-11-29 07:09:23,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:23,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066811693] [2023-11-29 07:09:23,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:23,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 07:09:23,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:23,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066811693] [2023-11-29 07:09:23,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066811693] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:09:23,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383746894] [2023-11-29 07:09:23,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:23,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:23,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:23,728 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:23,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 07:09:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:23,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 07:09:23,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:09:24,063 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 07:09:24,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:09:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 07:09:24,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383746894] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:09:24,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:09:24,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2023-11-29 07:09:24,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421121765] [2023-11-29 07:09:24,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:09:24,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:09:24,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:24,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:09:24,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:09:24,237 INFO L87 Difference]: Start difference. First operand 4661 states and 6148 transitions. Second operand has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:24,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:24,932 INFO L93 Difference]: Finished difference Result 13068 states and 17245 transitions. [2023-11-29 07:09:24,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 07:09:24,932 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2023-11-29 07:09:24,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:24,941 INFO L225 Difference]: With dead ends: 13068 [2023-11-29 07:09:24,941 INFO L226 Difference]: Without dead ends: 8570 [2023-11-29 07:09:24,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-11-29 07:09:24,946 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 904 mSDsluCounter, 3192 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 3717 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:24,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 3717 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 07:09:24,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8570 states. [2023-11-29 07:09:25,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8570 to 7261. [2023-11-29 07:09:25,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7261 states, 7255 states have (on average 1.3342522398345968) internal successors, (9680), 7259 states have internal predecessors, (9680), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:25,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7261 states to 7261 states and 9685 transitions. [2023-11-29 07:09:25,249 INFO L78 Accepts]: Start accepts. Automaton has 7261 states and 9685 transitions. Word has length 157 [2023-11-29 07:09:25,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:25,250 INFO L495 AbstractCegarLoop]: Abstraction has 7261 states and 9685 transitions. [2023-11-29 07:09:25,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:25,250 INFO L276 IsEmpty]: Start isEmpty. Operand 7261 states and 9685 transitions. [2023-11-29 07:09:25,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-29 07:09:25,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:25,253 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:25,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 07:09:25,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:25,454 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:25,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:25,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1001900481, now seen corresponding path program 1 times [2023-11-29 07:09:25,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:25,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441348820] [2023-11-29 07:09:25,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:25,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:25,829 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 187 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 07:09:25,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:25,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441348820] [2023-11-29 07:09:25,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441348820] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:09:25,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610644948] [2023-11-29 07:09:25,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:25,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:25,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:25,831 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:25,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 07:09:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:25,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 07:09:25,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:09:26,253 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 187 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 07:09:26,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:09:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 187 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 07:09:26,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610644948] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:09:26,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:09:26,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 11 [2023-11-29 07:09:26,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738339450] [2023-11-29 07:09:26,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:09:26,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 07:09:26,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:26,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 07:09:26,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:09:26,496 INFO L87 Difference]: Start difference. First operand 7261 states and 9685 transitions. Second operand has 11 states, 11 states have (on average 22.363636363636363) internal successors, (246), 11 states have internal predecessors, (246), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:27,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:27,430 INFO L93 Difference]: Finished difference Result 18753 states and 24814 transitions. [2023-11-29 07:09:27,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 07:09:27,431 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 22.363636363636363) internal successors, (246), 11 states have internal predecessors, (246), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 252 [2023-11-29 07:09:27,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:27,441 INFO L225 Difference]: With dead ends: 18753 [2023-11-29 07:09:27,441 INFO L226 Difference]: Without dead ends: 11655 [2023-11-29 07:09:27,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2023-11-29 07:09:27,446 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 1515 mSDsluCounter, 7169 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 8156 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:27,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 8156 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 07:09:27,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11655 states. [2023-11-29 07:09:27,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11655 to 9520. [2023-11-29 07:09:27,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9520 states, 9514 states have (on average 1.3391843598906874) internal successors, (12741), 9518 states have internal predecessors, (12741), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:27,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9520 states to 9520 states and 12746 transitions. [2023-11-29 07:09:27,723 INFO L78 Accepts]: Start accepts. Automaton has 9520 states and 12746 transitions. Word has length 252 [2023-11-29 07:09:27,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:27,724 INFO L495 AbstractCegarLoop]: Abstraction has 9520 states and 12746 transitions. [2023-11-29 07:09:27,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.363636363636363) internal successors, (246), 11 states have internal predecessors, (246), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:27,724 INFO L276 IsEmpty]: Start isEmpty. Operand 9520 states and 12746 transitions. [2023-11-29 07:09:27,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-11-29 07:09:27,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:27,727 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 07:09:27,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 07:09:27,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 07:09:27,927 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:27,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:27,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1331495454, now seen corresponding path program 1 times [2023-11-29 07:09:27,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:27,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400045165] [2023-11-29 07:09:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:27,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:28,520 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 15 proven. 436 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 07:09:28,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:28,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400045165] [2023-11-29 07:09:28,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400045165] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:09:28,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295753529] [2023-11-29 07:09:28,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:28,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:28,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:28,522 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:28,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 07:09:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:28,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 07:09:28,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:09:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 15 proven. 436 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 07:09:29,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:09:29,364 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 15 proven. 436 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 07:09:29,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295753529] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:09:29,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:09:29,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2023-11-29 07:09:29,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751512938] [2023-11-29 07:09:29,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:09:29,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 07:09:29,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:29,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 07:09:29,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:09:29,367 INFO L87 Difference]: Start difference. First operand 9520 states and 12746 transitions. Second operand has 13 states, 13 states have (on average 26.153846153846153) internal successors, (340), 13 states have internal predecessors, (340), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:30,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:30,597 INFO L93 Difference]: Finished difference Result 24102 states and 31925 transitions. [2023-11-29 07:09:30,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 07:09:30,597 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 26.153846153846153) internal successors, (340), 13 states have internal predecessors, (340), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 348 [2023-11-29 07:09:30,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:30,609 INFO L225 Difference]: With dead ends: 24102 [2023-11-29 07:09:30,610 INFO L226 Difference]: Without dead ends: 14745 [2023-11-29 07:09:30,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 699 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2023-11-29 07:09:30,614 INFO L413 NwaCegarLoop]: 1481 mSDtfsCounter, 2236 mSDsluCounter, 13659 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2236 SdHoareTripleChecker+Valid, 15140 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:30,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2236 Valid, 15140 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 07:09:30,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14745 states. [2023-11-29 07:09:30,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14745 to 11781. [2023-11-29 07:09:30,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11781 states, 11775 states have (on average 1.3421656050955415) internal successors, (15804), 11779 states have internal predecessors, (15804), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:30,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11781 states to 11781 states and 15809 transitions. [2023-11-29 07:09:30,962 INFO L78 Accepts]: Start accepts. Automaton has 11781 states and 15809 transitions. Word has length 348 [2023-11-29 07:09:30,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:30,962 INFO L495 AbstractCegarLoop]: Abstraction has 11781 states and 15809 transitions. [2023-11-29 07:09:30,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 26.153846153846153) internal successors, (340), 13 states have internal predecessors, (340), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:30,963 INFO L276 IsEmpty]: Start isEmpty. Operand 11781 states and 15809 transitions. [2023-11-29 07:09:30,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2023-11-29 07:09:30,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:30,966 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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 07:09:30,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 07:09:31,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:31,166 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:31,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:31,167 INFO L85 PathProgramCache]: Analyzing trace with hash 88554710, now seen corresponding path program 1 times [2023-11-29 07:09:31,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:31,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704790966] [2023-11-29 07:09:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:31,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 336 proven. 474 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 07:09:32,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:32,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704790966] [2023-11-29 07:09:32,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704790966] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:09:32,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789758413] [2023-11-29 07:09:32,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:32,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:32,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:32,113 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:32,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 07:09:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:32,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 07:09:32,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:09:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 20 proven. 790 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 07:09:32,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:09:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 20 proven. 790 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 07:09:33,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789758413] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:09:33,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:09:33,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 22 [2023-11-29 07:09:33,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902626280] [2023-11-29 07:09:33,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:09:33,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 07:09:33,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:33,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 07:09:33,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2023-11-29 07:09:33,283 INFO L87 Difference]: Start difference. First operand 11781 states and 15809 transitions. Second operand has 22 states, 22 states have (on average 32.72727272727273) internal successors, (720), 22 states have internal predecessors, (720), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:35,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:35,061 INFO L93 Difference]: Finished difference Result 29460 states and 39060 transitions. [2023-11-29 07:09:35,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 07:09:35,061 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 32.72727272727273) internal successors, (720), 22 states have internal predecessors, (720), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 445 [2023-11-29 07:09:35,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:35,075 INFO L225 Difference]: With dead ends: 29460 [2023-11-29 07:09:35,075 INFO L226 Difference]: Without dead ends: 17842 [2023-11-29 07:09:35,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 941 GetRequests, 888 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=369, Invalid=2601, Unknown=0, NotChecked=0, Total=2970 [2023-11-29 07:09:35,082 INFO L413 NwaCegarLoop]: 1981 mSDtfsCounter, 5773 mSDsluCounter, 21190 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5773 SdHoareTripleChecker+Valid, 23171 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:35,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5773 Valid, 23171 Invalid, 2004 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [158 Valid, 1846 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 07:09:35,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17842 states. [2023-11-29 07:09:35,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17842 to 13894. [2023-11-29 07:09:35,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13894 states, 13888 states have (on average 1.345838133640553) internal successors, (18691), 13892 states have internal predecessors, (18691), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:35,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13894 states to 13894 states and 18696 transitions. [2023-11-29 07:09:35,520 INFO L78 Accepts]: Start accepts. Automaton has 13894 states and 18696 transitions. Word has length 445 [2023-11-29 07:09:35,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:35,520 INFO L495 AbstractCegarLoop]: Abstraction has 13894 states and 18696 transitions. [2023-11-29 07:09:35,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 32.72727272727273) internal successors, (720), 22 states have internal predecessors, (720), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:35,521 INFO L276 IsEmpty]: Start isEmpty. Operand 13894 states and 18696 transitions. [2023-11-29 07:09:35,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2023-11-29 07:09:35,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:35,525 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 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 07:09:35,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 07:09:35,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 07:09:35,725 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:35,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:35,726 INFO L85 PathProgramCache]: Analyzing trace with hash 480598903, now seen corresponding path program 1 times [2023-11-29 07:09:35,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:35,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509416755] [2023-11-29 07:09:35,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:35,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 1066 trivial. 0 not checked. [2023-11-29 07:09:35,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:35,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509416755] [2023-11-29 07:09:35,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509416755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:35,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:35,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:09:35,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180991496] [2023-11-29 07:09:35,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:35,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:09:35,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:35,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:09:35,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:35,898 INFO L87 Difference]: Start difference. First operand 13894 states and 18696 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:36,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:36,118 INFO L93 Difference]: Finished difference Result 15840 states and 20954 transitions. [2023-11-29 07:09:36,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:09:36,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 544 [2023-11-29 07:09:36,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:36,121 INFO L225 Difference]: With dead ends: 15840 [2023-11-29 07:09:36,121 INFO L226 Difference]: Without dead ends: 2005 [2023-11-29 07:09:36,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:09:36,128 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 136 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:36,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 368 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:09:36,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2023-11-29 07:09:36,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1236. [2023-11-29 07:09:36,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1232 states have (on average 1.0771103896103895) internal successors, (1327), 1234 states have internal predecessors, (1327), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:36,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1330 transitions. [2023-11-29 07:09:36,183 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1330 transitions. Word has length 544 [2023-11-29 07:09:36,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:36,184 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1330 transitions. [2023-11-29 07:09:36,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:36,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1330 transitions. [2023-11-29 07:09:36,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2023-11-29 07:09:36,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:36,188 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 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 07:09:36,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 07:09:36,189 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:36,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:36,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1166626677, now seen corresponding path program 1 times [2023-11-29 07:09:36,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:36,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000515019] [2023-11-29 07:09:36,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:36,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 1066 trivial. 0 not checked. [2023-11-29 07:09:36,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:36,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000515019] [2023-11-29 07:09:36,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000515019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:36,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:36,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:09:36,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549278709] [2023-11-29 07:09:36,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:36,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:09:36,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:36,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:09:36,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:09:36,462 INFO L87 Difference]: Start difference. First operand 1236 states and 1330 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:36,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:36,647 INFO L93 Difference]: Finished difference Result 1631 states and 1783 transitions. [2023-11-29 07:09:36,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 07:09:36,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 545 [2023-11-29 07:09:36,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:36,650 INFO L225 Difference]: With dead ends: 1631 [2023-11-29 07:09:36,650 INFO L226 Difference]: Without dead ends: 1431 [2023-11-29 07:09:36,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-29 07:09:36,651 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 227 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:36,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 1436 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:09:36,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2023-11-29 07:09:36,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1299. [2023-11-29 07:09:36,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 1295 states have (on average 1.0787644787644788) internal successors, (1397), 1297 states have internal predecessors, (1397), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:36,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1400 transitions. [2023-11-29 07:09:36,706 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1400 transitions. Word has length 545 [2023-11-29 07:09:36,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:36,706 INFO L495 AbstractCegarLoop]: Abstraction has 1299 states and 1400 transitions. [2023-11-29 07:09:36,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:36,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1400 transitions. [2023-11-29 07:09:36,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2023-11-29 07:09:36,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:36,710 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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, 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 07:09:36,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 07:09:36,711 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:36,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:36,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2006018401, now seen corresponding path program 1 times [2023-11-29 07:09:36,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:36,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199265390] [2023-11-29 07:09:36,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:36,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1193 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 1066 trivial. 0 not checked. [2023-11-29 07:09:36,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:36,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199265390] [2023-11-29 07:09:36,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199265390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:09:36,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:09:36,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 07:09:36,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032489873] [2023-11-29 07:09:36,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:09:36,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 07:09:36,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:36,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 07:09:36,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:09:36,894 INFO L87 Difference]: Start difference. First operand 1299 states and 1400 transitions. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:37,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:37,012 INFO L93 Difference]: Finished difference Result 1490 states and 1612 transitions. [2023-11-29 07:09:37,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 07:09:37,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 546 [2023-11-29 07:09:37,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:37,014 INFO L225 Difference]: With dead ends: 1490 [2023-11-29 07:09:37,014 INFO L226 Difference]: Without dead ends: 1290 [2023-11-29 07:09:37,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:09:37,015 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 182 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:37,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 804 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:09:37,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2023-11-29 07:09:37,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1284. [2023-11-29 07:09:37,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1281 states have (on average 1.0671350507416082) internal successors, (1367), 1282 states have internal predecessors, (1367), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:37,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1369 transitions. [2023-11-29 07:09:37,067 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1369 transitions. Word has length 546 [2023-11-29 07:09:37,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:37,068 INFO L495 AbstractCegarLoop]: Abstraction has 1284 states and 1369 transitions. [2023-11-29 07:09:37,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:37,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1369 transitions. [2023-11-29 07:09:37,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2023-11-29 07:09:37,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:37,072 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:09:37,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 07:09:37,072 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:37,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:37,072 INFO L85 PathProgramCache]: Analyzing trace with hash -2046093584, now seen corresponding path program 1 times [2023-11-29 07:09:37,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:37,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103293704] [2023-11-29 07:09:37,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:37,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 118 proven. 386 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2023-11-29 07:09:38,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:38,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103293704] [2023-11-29 07:09:38,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103293704] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:09:38,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598251543] [2023-11-29 07:09:38,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:38,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:38,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:38,759 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:38,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 07:09:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:39,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 1686 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 07:09:39,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:09:39,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 120 proven. 320 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2023-11-29 07:09:39,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:09:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 30 proven. 410 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2023-11-29 07:09:40,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598251543] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:09:40,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:09:40,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 28 [2023-11-29 07:09:40,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041323425] [2023-11-29 07:09:40,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:09:40,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 07:09:40,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:40,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 07:09:40,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2023-11-29 07:09:40,370 INFO L87 Difference]: Start difference. First operand 1284 states and 1369 transitions. Second operand has 28 states, 28 states have (on average 14.178571428571429) internal successors, (397), 28 states have internal predecessors, (397), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:40,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:40,895 INFO L93 Difference]: Finished difference Result 1411 states and 1500 transitions. [2023-11-29 07:09:40,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 07:09:40,896 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 14.178571428571429) internal successors, (397), 28 states have internal predecessors, (397), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 599 [2023-11-29 07:09:40,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:40,897 INFO L225 Difference]: With dead ends: 1411 [2023-11-29 07:09:40,898 INFO L226 Difference]: Without dead ends: 1408 [2023-11-29 07:09:40,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1232 GetRequests, 1190 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=208, Invalid=1684, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 07:09:40,899 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 591 mSDsluCounter, 5911 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 6277 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:40,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 6277 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 07:09:40,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2023-11-29 07:09:40,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1378. [2023-11-29 07:09:40,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1375 states have (on average 1.0654545454545454) internal successors, (1465), 1376 states have internal predecessors, (1465), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:40,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1467 transitions. [2023-11-29 07:09:40,959 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1467 transitions. Word has length 599 [2023-11-29 07:09:40,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:40,959 INFO L495 AbstractCegarLoop]: Abstraction has 1378 states and 1467 transitions. [2023-11-29 07:09:40,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 14.178571428571429) internal successors, (397), 28 states have internal predecessors, (397), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:40,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1467 transitions. [2023-11-29 07:09:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2023-11-29 07:09:40,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:40,964 INFO L195 NwaCegarLoop]: trace histogram [13, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:09:40,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 07:09:41,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:41,165 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:41,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:41,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1355803568, now seen corresponding path program 1 times [2023-11-29 07:09:41,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:41,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215950874] [2023-11-29 07:09:41,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:41,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:41,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 339 proven. 45 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2023-11-29 07:09:41,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:41,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215950874] [2023-11-29 07:09:41,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215950874] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:09:41,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225291195] [2023-11-29 07:09:41,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:41,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:41,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:41,974 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:41,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 07:09:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:42,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 1813 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 07:09:42,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:09:42,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 339 proven. 45 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2023-11-29 07:09:42,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:09:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 339 proven. 45 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2023-11-29 07:09:42,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225291195] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:09:42,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:09:42,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2023-11-29 07:09:42,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169497646] [2023-11-29 07:09:42,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:09:42,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:09:42,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:42,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:09:42,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:09:42,554 INFO L87 Difference]: Start difference. First operand 1378 states and 1467 transitions. Second operand has 9 states, 9 states have (on average 29.77777777777778) internal successors, (268), 9 states have internal predecessors, (268), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:42,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:42,775 INFO L93 Difference]: Finished difference Result 1760 states and 1881 transitions. [2023-11-29 07:09:42,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 07:09:42,776 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 29.77777777777778) internal successors, (268), 9 states have internal predecessors, (268), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 646 [2023-11-29 07:09:42,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:42,778 INFO L225 Difference]: With dead ends: 1760 [2023-11-29 07:09:42,778 INFO L226 Difference]: Without dead ends: 1575 [2023-11-29 07:09:42,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1310 GetRequests, 1296 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-11-29 07:09:42,779 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 391 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:42,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 2375 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:09:42,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2023-11-29 07:09:42,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1459. [2023-11-29 07:09:42,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1456 states have (on average 1.0652472527472527) internal successors, (1551), 1457 states have internal predecessors, (1551), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:42,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 1553 transitions. [2023-11-29 07:09:42,860 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 1553 transitions. Word has length 646 [2023-11-29 07:09:42,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:42,861 INFO L495 AbstractCegarLoop]: Abstraction has 1459 states and 1553 transitions. [2023-11-29 07:09:42,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.77777777777778) internal successors, (268), 9 states have internal predecessors, (268), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:42,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 1553 transitions. [2023-11-29 07:09:42,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2023-11-29 07:09:42,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:42,866 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 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 07:09:42,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 07:09:43,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:43,067 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:43,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:43,068 INFO L85 PathProgramCache]: Analyzing trace with hash 640406945, now seen corresponding path program 1 times [2023-11-29 07:09:43,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:43,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762026204] [2023-11-29 07:09:43,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:43,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 225 proven. 966 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2023-11-29 07:09:45,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:45,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762026204] [2023-11-29 07:09:45,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762026204] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:09:45,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892264762] [2023-11-29 07:09:45,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:45,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:45,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:45,058 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:45,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 07:09:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:45,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 1951 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 07:09:45,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:09:46,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 308 proven. 832 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2023-11-29 07:09:46,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:09:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 35 proven. 1105 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2023-11-29 07:09:47,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892264762] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:09:47,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:09:47,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 32 [2023-11-29 07:09:47,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418629403] [2023-11-29 07:09:47,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:09:47,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 07:09:47,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:47,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 07:09:47,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2023-11-29 07:09:47,087 INFO L87 Difference]: Start difference. First operand 1459 states and 1553 transitions. Second operand has 32 states, 32 states have (on average 20.9375) internal successors, (670), 32 states have internal predecessors, (670), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:47,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:47,876 INFO L93 Difference]: Finished difference Result 1585 states and 1683 transitions. [2023-11-29 07:09:47,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 07:09:47,877 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 20.9375) internal successors, (670), 32 states have internal predecessors, (670), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 701 [2023-11-29 07:09:47,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:47,879 INFO L225 Difference]: With dead ends: 1585 [2023-11-29 07:09:47,879 INFO L226 Difference]: Without dead ends: 1582 [2023-11-29 07:09:47,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1448 GetRequests, 1395 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=277, Invalid=2693, Unknown=0, NotChecked=0, Total=2970 [2023-11-29 07:09:47,880 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 1058 mSDsluCounter, 10152 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 10711 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:47,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 10711 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:09:47,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2023-11-29 07:09:47,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1553. [2023-11-29 07:09:47,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 1550 states have (on average 1.0638709677419356) internal successors, (1649), 1551 states have internal predecessors, (1649), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:47,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 1651 transitions. [2023-11-29 07:09:47,954 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 1651 transitions. Word has length 701 [2023-11-29 07:09:47,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:47,955 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 1651 transitions. [2023-11-29 07:09:47,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 20.9375) internal successors, (670), 32 states have internal predecessors, (670), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:47,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 1651 transitions. [2023-11-29 07:09:47,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2023-11-29 07:09:47,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:47,961 INFO L195 NwaCegarLoop]: trace histogram [15, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 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 07:09:47,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 07:09:48,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:48,162 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:48,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:48,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1173182687, now seen corresponding path program 1 times [2023-11-29 07:09:48,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:48,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994159114] [2023-11-29 07:09:48,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:48,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1845 backedges. 571 proven. 200 refuted. 0 times theorem prover too weak. 1074 trivial. 0 not checked. [2023-11-29 07:09:48,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:48,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994159114] [2023-11-29 07:09:48,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994159114] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:09:48,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808086243] [2023-11-29 07:09:48,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:48,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:48,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:48,966 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:48,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 07:09:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:49,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 2078 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 07:09:49,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:09:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1845 backedges. 571 proven. 200 refuted. 0 times theorem prover too weak. 1074 trivial. 0 not checked. [2023-11-29 07:09:49,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:09:49,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1845 backedges. 571 proven. 200 refuted. 0 times theorem prover too weak. 1074 trivial. 0 not checked. [2023-11-29 07:09:49,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808086243] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:09:49,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:09:49,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 11 [2023-11-29 07:09:49,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490846956] [2023-11-29 07:09:49,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:09:49,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 07:09:49,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:49,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 07:09:49,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:09:49,740 INFO L87 Difference]: Start difference. First operand 1553 states and 1651 transitions. Second operand has 11 states, 11 states have (on average 33.45454545454545) internal successors, (368), 11 states have internal predecessors, (368), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:50,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:50,071 INFO L93 Difference]: Finished difference Result 1941 states and 2073 transitions. [2023-11-29 07:09:50,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 07:09:50,072 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 33.45454545454545) internal successors, (368), 11 states have internal predecessors, (368), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 748 [2023-11-29 07:09:50,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:50,074 INFO L225 Difference]: With dead ends: 1941 [2023-11-29 07:09:50,074 INFO L226 Difference]: Without dead ends: 1756 [2023-11-29 07:09:50,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1521 GetRequests, 1503 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-29 07:09:50,075 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 574 mSDsluCounter, 3804 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 4317 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:50,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 4317 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 07:09:50,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2023-11-29 07:09:50,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1636. [2023-11-29 07:09:50,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1633 states have (on average 1.063686466625842) internal successors, (1737), 1634 states have internal predecessors, (1737), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:50,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1739 transitions. [2023-11-29 07:09:50,148 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1739 transitions. Word has length 748 [2023-11-29 07:09:50,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:50,148 INFO L495 AbstractCegarLoop]: Abstraction has 1636 states and 1739 transitions. [2023-11-29 07:09:50,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 33.45454545454545) internal successors, (368), 11 states have internal predecessors, (368), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:50,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1739 transitions. [2023-11-29 07:09:50,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2023-11-29 07:09:50,155 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:50,155 INFO L195 NwaCegarLoop]: trace histogram [16, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:50,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 07:09:50,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:50,356 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:50,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:50,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1989158495, now seen corresponding path program 1 times [2023-11-29 07:09:50,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:50,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243632273] [2023-11-29 07:09:50,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:50,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2098 backedges. 184 proven. 1704 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-29 07:09:52,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:52,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243632273] [2023-11-29 07:09:52,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243632273] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:09:52,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900401108] [2023-11-29 07:09:52,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:52,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:52,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:52,374 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:52,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 07:09:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:52,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 2217 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-29 07:09:52,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:09:53,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2098 backedges. 407 proven. 1447 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-11-29 07:09:53,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:09:54,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2098 backedges. 40 proven. 1814 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-11-29 07:09:54,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900401108] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:09:54,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:09:54,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 38 [2023-11-29 07:09:54,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149590914] [2023-11-29 07:09:54,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:09:54,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 07:09:54,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:54,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 07:09:54,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1305, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 07:09:54,725 INFO L87 Difference]: Start difference. First operand 1636 states and 1739 transitions. Second operand has 38 states, 38 states have (on average 25.42105263157895) internal successors, (966), 38 states have internal predecessors, (966), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:55,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:55,943 INFO L93 Difference]: Finished difference Result 1766 states and 1873 transitions. [2023-11-29 07:09:55,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 07:09:55,944 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 25.42105263157895) internal successors, (966), 38 states have internal predecessors, (966), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 804 [2023-11-29 07:09:55,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:55,946 INFO L225 Difference]: With dead ends: 1766 [2023-11-29 07:09:55,946 INFO L226 Difference]: Without dead ends: 1763 [2023-11-29 07:09:55,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1666 GetRequests, 1601 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=349, Invalid=4073, Unknown=0, NotChecked=0, Total=4422 [2023-11-29 07:09:55,948 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 1080 mSDsluCounter, 19262 mSDsCounter, 0 mSdLazyCounter, 2011 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 20045 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:55,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 20045 Invalid, 2016 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 2011 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 07:09:55,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2023-11-29 07:09:56,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1730. [2023-11-29 07:09:56,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1727 states have (on average 1.062536189924725) internal successors, (1835), 1728 states have internal predecessors, (1835), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:56,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 1837 transitions. [2023-11-29 07:09:56,030 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 1837 transitions. Word has length 804 [2023-11-29 07:09:56,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:56,030 INFO L495 AbstractCegarLoop]: Abstraction has 1730 states and 1837 transitions. [2023-11-29 07:09:56,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 25.42105263157895) internal successors, (966), 38 states have internal predecessors, (966), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:56,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 1837 transitions. [2023-11-29 07:09:56,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2023-11-29 07:09:56,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:56,037 INFO L195 NwaCegarLoop]: trace histogram [17, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:56,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 07:09:56,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:56,238 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:56,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:56,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1745038433, now seen corresponding path program 1 times [2023-11-29 07:09:56,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:56,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292066705] [2023-11-29 07:09:56,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:56,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:57,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2347 backedges. 803 proven. 466 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2023-11-29 07:09:57,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:57,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292066705] [2023-11-29 07:09:57,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292066705] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:09:57,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946533629] [2023-11-29 07:09:57,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:57,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:57,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:57,343 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:57,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 07:09:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:57,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 2344 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 07:09:57,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:09:57,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2347 backedges. 803 proven. 466 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2023-11-29 07:09:57,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:09:58,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2347 backedges. 803 proven. 466 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2023-11-29 07:09:58,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946533629] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:09:58,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:09:58,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2023-11-29 07:09:58,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928450188] [2023-11-29 07:09:58,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:09:58,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 07:09:58,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:58,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 07:09:58,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:09:58,258 INFO L87 Difference]: Start difference. First operand 1730 states and 1837 transitions. Second operand has 13 states, 13 states have (on average 36.07692307692308) internal successors, (469), 13 states have internal predecessors, (469), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:58,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:58,706 INFO L93 Difference]: Finished difference Result 2124 states and 2267 transitions. [2023-11-29 07:09:58,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 07:09:58,706 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 36.07692307692308) internal successors, (469), 13 states have internal predecessors, (469), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 851 [2023-11-29 07:09:58,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:58,708 INFO L225 Difference]: With dead ends: 2124 [2023-11-29 07:09:58,708 INFO L226 Difference]: Without dead ends: 1939 [2023-11-29 07:09:58,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1734 GetRequests, 1712 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2023-11-29 07:09:58,710 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 758 mSDsluCounter, 6414 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 7098 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:58,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 7098 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 07:09:58,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2023-11-29 07:09:58,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1815. [2023-11-29 07:09:58,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1815 states, 1812 states have (on average 1.0623620309050772) internal successors, (1925), 1813 states have internal predecessors, (1925), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:58,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 1927 transitions. [2023-11-29 07:09:58,798 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 1927 transitions. Word has length 851 [2023-11-29 07:09:58,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:58,799 INFO L495 AbstractCegarLoop]: Abstraction has 1815 states and 1927 transitions. [2023-11-29 07:09:58,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 36.07692307692308) internal successors, (469), 13 states have internal predecessors, (469), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:09:58,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 1927 transitions. [2023-11-29 07:09:58,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 909 [2023-11-29 07:09:58,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:58,807 INFO L195 NwaCegarLoop]: trace histogram [18, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:58,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 07:09:59,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:59,007 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:59,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:59,008 INFO L85 PathProgramCache]: Analyzing trace with hash -320780683, now seen corresponding path program 1 times [2023-11-29 07:09:59,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:59,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431259095] [2023-11-29 07:09:59,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:59,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2662 backedges. 143 proven. 2450 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-29 07:10:01,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:01,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431259095] [2023-11-29 07:10:01,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431259095] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:10:01,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301396868] [2023-11-29 07:10:01,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:01,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:01,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:01,584 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:01,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 07:10:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:01,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 69 conjunts are in the unsatisfiable core [2023-11-29 07:10:01,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2662 backedges. 414 proven. 2162 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-29 07:10:03,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:10:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2662 backedges. 45 proven. 2531 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-29 07:10:04,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301396868] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:10:04,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:10:04,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 44 [2023-11-29 07:10:04,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223944658] [2023-11-29 07:10:04,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:10:04,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-29 07:10:04,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:04,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-29 07:10:04,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1773, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 07:10:04,229 INFO L87 Difference]: Start difference. First operand 1815 states and 1927 transitions. Second operand has 44 states, 44 states have (on average 28.75) internal successors, (1265), 44 states have internal predecessors, (1265), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:05,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:05,964 INFO L93 Difference]: Finished difference Result 1955 states and 2071 transitions. [2023-11-29 07:10:05,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-29 07:10:05,964 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 28.75) internal successors, (1265), 44 states have internal predecessors, (1265), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 908 [2023-11-29 07:10:05,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:05,966 INFO L225 Difference]: With dead ends: 1955 [2023-11-29 07:10:05,966 INFO L226 Difference]: Without dead ends: 1952 [2023-11-29 07:10:05,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1886 GetRequests, 1809 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=421, Invalid=5741, Unknown=0, NotChecked=0, Total=6162 [2023-11-29 07:10:05,969 INFO L413 NwaCegarLoop]: 1009 mSDtfsCounter, 1311 mSDsluCounter, 30959 mSDsCounter, 0 mSdLazyCounter, 3174 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 31968 SdHoareTripleChecker+Invalid, 3181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:05,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 31968 Invalid, 3181 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 3174 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 07:10:05,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2023-11-29 07:10:06,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1909. [2023-11-29 07:10:06,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1906 states have (on average 1.0613850996852046) internal successors, (2023), 1907 states have internal predecessors, (2023), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:06,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 2025 transitions. [2023-11-29 07:10:06,062 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 2025 transitions. Word has length 908 [2023-11-29 07:10:06,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:06,063 INFO L495 AbstractCegarLoop]: Abstraction has 1909 states and 2025 transitions. [2023-11-29 07:10:06,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 28.75) internal successors, (1265), 44 states have internal predecessors, (1265), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:06,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 2025 transitions. [2023-11-29 07:10:06,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2023-11-29 07:10:06,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:06,071 INFO L195 NwaCegarLoop]: trace histogram [19, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:06,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 07:10:06,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:06,272 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:06,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:06,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1254623861, now seen corresponding path program 1 times [2023-11-29 07:10:06,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:06,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869257277] [2023-11-29 07:10:06,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:06,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2961 backedges. 1035 proven. 844 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2023-11-29 07:10:07,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:07,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869257277] [2023-11-29 07:10:07,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869257277] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:10:07,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043152839] [2023-11-29 07:10:07,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:07,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:07,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:07,532 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:07,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 07:10:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:07,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 2611 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 07:10:07,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2961 backedges. 1035 proven. 844 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2023-11-29 07:10:08,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:10:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2961 backedges. 1035 proven. 844 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2023-11-29 07:10:08,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043152839] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:10:08,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:10:08,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 15 [2023-11-29 07:10:08,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239795891] [2023-11-29 07:10:08,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:10:08,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 07:10:08,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:08,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 07:10:08,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2023-11-29 07:10:08,613 INFO L87 Difference]: Start difference. First operand 1909 states and 2025 transitions. Second operand has 15 states, 15 states have (on average 38.06666666666667) internal successors, (571), 15 states have internal predecessors, (571), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:09,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:09,223 INFO L93 Difference]: Finished difference Result 2325 states and 2479 transitions. [2023-11-29 07:10:09,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 07:10:09,223 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 38.06666666666667) internal successors, (571), 15 states have internal predecessors, (571), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 955 [2023-11-29 07:10:09,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:09,225 INFO L225 Difference]: With dead ends: 2325 [2023-11-29 07:10:09,225 INFO L226 Difference]: Without dead ends: 2140 [2023-11-29 07:10:09,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1949 GetRequests, 1923 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2023-11-29 07:10:09,227 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 943 mSDsluCounter, 9727 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 10584 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:09,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 10584 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 07:10:09,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2023-11-29 07:10:09,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1996. [2023-11-29 07:10:09,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1996 states, 1993 states have (on average 1.061214249874561) internal successors, (2115), 1994 states have internal predecessors, (2115), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:09,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 2117 transitions. [2023-11-29 07:10:09,324 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 2117 transitions. Word has length 955 [2023-11-29 07:10:09,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:09,325 INFO L495 AbstractCegarLoop]: Abstraction has 1996 states and 2117 transitions. [2023-11-29 07:10:09,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.06666666666667) internal successors, (571), 15 states have internal predecessors, (571), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:09,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 2117 transitions. [2023-11-29 07:10:09,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1014 [2023-11-29 07:10:09,334 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:09,334 INFO L195 NwaCegarLoop]: trace histogram [20, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:09,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 07:10:09,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 07:10:09,535 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:09,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:09,536 INFO L85 PathProgramCache]: Analyzing trace with hash 114041232, now seen corresponding path program 1 times [2023-11-29 07:10:09,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:09,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106975984] [2023-11-29 07:10:09,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:09,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3338 backedges. 102 proven. 3203 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 07:10:12,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:12,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106975984] [2023-11-29 07:10:12,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106975984] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:10:12,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960167143] [2023-11-29 07:10:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:12,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:12,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:12,745 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:12,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 07:10:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:13,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 2752 conjuncts, 81 conjunts are in the unsatisfiable core [2023-11-29 07:10:13,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:14,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3338 backedges. 329 proven. 2976 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 07:10:14,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:10:15,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3338 backedges. 50 proven. 3255 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 07:10:15,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960167143] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:10:15,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:10:15,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 50 [2023-11-29 07:10:15,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710054298] [2023-11-29 07:10:15,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:10:15,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 07:10:15,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:15,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 07:10:15,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2313, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 07:10:15,890 INFO L87 Difference]: Start difference. First operand 1996 states and 2117 transitions. Second operand has 50 states, 50 states have (on average 30.48) internal successors, (1524), 50 states have internal predecessors, (1524), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:18,370 INFO L93 Difference]: Finished difference Result 3379 states and 3579 transitions. [2023-11-29 07:10:18,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-11-29 07:10:18,371 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 30.48) internal successors, (1524), 50 states have internal predecessors, (1524), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1013 [2023-11-29 07:10:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:18,374 INFO L225 Difference]: With dead ends: 3379 [2023-11-29 07:10:18,374 INFO L226 Difference]: Without dead ends: 3376 [2023-11-29 07:10:18,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2117 GetRequests, 2019 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2301 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=557, Invalid=9343, Unknown=0, NotChecked=0, Total=9900 [2023-11-29 07:10:18,378 INFO L413 NwaCegarLoop]: 1240 mSDtfsCounter, 2211 mSDsluCounter, 38029 mSDsCounter, 0 mSdLazyCounter, 3799 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2211 SdHoareTripleChecker+Valid, 39269 SdHoareTripleChecker+Invalid, 3827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:18,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2211 Valid, 39269 Invalid, 3827 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 3799 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 07:10:18,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2023-11-29 07:10:18,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 3056. [2023-11-29 07:10:18,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3056 states, 3053 states have (on average 1.0579757615460204) internal successors, (3230), 3054 states have internal predecessors, (3230), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:18,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3056 states to 3056 states and 3232 transitions. [2023-11-29 07:10:18,534 INFO L78 Accepts]: Start accepts. Automaton has 3056 states and 3232 transitions. Word has length 1013 [2023-11-29 07:10:18,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:18,535 INFO L495 AbstractCegarLoop]: Abstraction has 3056 states and 3232 transitions. [2023-11-29 07:10:18,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 30.48) internal successors, (1524), 50 states have internal predecessors, (1524), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:18,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3056 states and 3232 transitions. [2023-11-29 07:10:18,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1061 [2023-11-29 07:10:18,545 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:18,546 INFO L195 NwaCegarLoop]: trace histogram [21, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:18,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 07:10:18,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:18,746 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:18,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:18,747 INFO L85 PathProgramCache]: Analyzing trace with hash -488190704, now seen corresponding path program 1 times [2023-11-29 07:10:18,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:18,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032551354] [2023-11-29 07:10:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:18,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3688 backedges. 702 proven. 2254 refuted. 0 times theorem prover too weak. 732 trivial. 0 not checked. [2023-11-29 07:10:20,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:20,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032551354] [2023-11-29 07:10:20,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032551354] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:10:20,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484781313] [2023-11-29 07:10:20,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:20,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:20,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:20,901 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:20,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 07:10:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:21,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 2879 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 07:10:21,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3688 backedges. 2602 proven. 0 refuted. 0 times theorem prover too weak. 1086 trivial. 0 not checked. [2023-11-29 07:10:21,749 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:10:21,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484781313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:21,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:10:21,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [25] total 28 [2023-11-29 07:10:21,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515285113] [2023-11-29 07:10:21,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:21,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 07:10:21,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:21,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 07:10:21,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2023-11-29 07:10:21,753 INFO L87 Difference]: Start difference. First operand 3056 states and 3232 transitions. Second operand has 13 states, 13 states have (on average 51.84615384615385) internal successors, (674), 13 states have internal predecessors, (674), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:22,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:22,177 INFO L93 Difference]: Finished difference Result 3077 states and 3253 transitions. [2023-11-29 07:10:22,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 07:10:22,178 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 51.84615384615385) internal successors, (674), 13 states have internal predecessors, (674), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1060 [2023-11-29 07:10:22,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:22,179 INFO L225 Difference]: With dead ends: 3077 [2023-11-29 07:10:22,179 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 07:10:22,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1110 GetRequests, 1073 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=1248, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 07:10:22,181 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 918 mSDsluCounter, 3231 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 4124 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:22,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 4124 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:10:22,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 07:10:22,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 07:10:22,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:22,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 07:10:22,181 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1060 [2023-11-29 07:10:22,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:22,182 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 07:10:22,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 51.84615384615385) internal successors, (674), 13 states have internal predecessors, (674), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:22,182 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 07:10:22,182 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 07:10:22,184 INFO L805 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 07:10:22,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 07:10:22,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a9fac3c-7365-46d1-bfd1-ac88a42eaad6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:22,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 07:11:20,190 WARN L293 SmtUtils]: Spent 51.10s on a formula simplification. DAG size of input: 384 DAG size of output: 485 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)