./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/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_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/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_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/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 fdba2ae989c969b8ea983da7229bdc32604e4ef890fc1d03498078fc576fe644 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:08:10,138 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:08:10,201 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:08:10,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:08:10,207 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:08:10,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:08:10,230 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:08:10,231 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:08:10,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:08:10,232 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:08:10,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:08:10,233 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:08:10,234 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:08:10,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:08:10,235 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:08:10,235 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:08:10,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:08:10,236 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:08:10,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:08:10,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:08:10,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:08:10,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:08:10,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:08:10,239 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:08:10,240 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:08:10,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:08:10,240 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:08:10,241 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:08:10,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:08:10,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:08:10,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:08:10,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:08:10,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:08:10,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:08:10,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:08:10,244 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:08:10,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:08:10,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:08:10,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:08:10,245 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:08:10,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:08:10,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:08:10,245 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_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdba2ae989c969b8ea983da7229bdc32604e4ef890fc1d03498078fc576fe644 [2023-11-29 05:08:10,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:08:10,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:08:10,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:08:10,496 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:08:10,496 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:08:10,498 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label07.c [2023-11-29 05:08:13,261 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:08:13,717 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:08:13,718 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label07.c [2023-11-29 05:08:13,758 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/data/65a3dee16/fa4a32028b3d46e2a58fec214b32d08f/FLAGf7d63678b [2023-11-29 05:08:13,774 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/data/65a3dee16/fa4a32028b3d46e2a58fec214b32d08f [2023-11-29 05:08:13,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:08:13,778 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:08:13,779 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:08:13,780 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:08:13,785 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:08:13,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:08:13" (1/1) ... [2023-11-29 05:08:13,787 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a08c3c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:13, skipping insertion in model container [2023-11-29 05:08:13,787 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:08:13" (1/1) ... [2023-11-29 05:08:13,940 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:08:14,347 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_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label07.c[20454,20467] [2023-11-29 05:08:14,373 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_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label07.c[21296,21309] [2023-11-29 05:08:15,133 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:08:15,146 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:08:15,190 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_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label07.c[20454,20467] [2023-11-29 05:08:15,193 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_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label07.c[21296,21309] [2023-11-29 05:08:15,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:08:15,823 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:08:15,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:15 WrapperNode [2023-11-29 05:08:15,824 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:08:15,825 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:08:15,825 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:08:15,825 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:08:15,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:15" (1/1) ... [2023-11-29 05:08:15,884 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:15" (1/1) ... [2023-11-29 05:08:16,262 INFO L138 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5211 [2023-11-29 05:08:16,263 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:08:16,264 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:08:16,264 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:08:16,264 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:08:16,273 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:15" (1/1) ... [2023-11-29 05:08:16,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:15" (1/1) ... [2023-11-29 05:08:16,305 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:15" (1/1) ... [2023-11-29 05:08:16,439 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 05:08:16,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:15" (1/1) ... [2023-11-29 05:08:16,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:15" (1/1) ... [2023-11-29 05:08:16,601 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:15" (1/1) ... [2023-11-29 05:08:16,632 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:15" (1/1) ... [2023-11-29 05:08:16,689 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:15" (1/1) ... [2023-11-29 05:08:16,703 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:15" (1/1) ... [2023-11-29 05:08:16,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:08:16,780 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:08:16,780 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:08:16,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:08:16,782 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:15" (1/1) ... [2023-11-29 05:08:16,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:08:16,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:08:16,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:08:16,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:08:16,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:08:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:08:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:08:16,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:08:17,007 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:08:17,010 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:08:21,650 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:08:21,717 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:08:21,717 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 05:08:21,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:08:21 BoogieIcfgContainer [2023-11-29 05:08:21,718 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:08:21,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:08:21,721 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:08:21,724 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:08:21,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:08:13" (1/3) ... [2023-11-29 05:08:21,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a0909a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:08:21, skipping insertion in model container [2023-11-29 05:08:21,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:15" (2/3) ... [2023-11-29 05:08:21,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a0909a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:08:21, skipping insertion in model container [2023-11-29 05:08:21,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:08:21" (3/3) ... [2023-11-29 05:08:21,727 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label07.c [2023-11-29 05:08:21,747 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:08:21,747 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 05:08:21,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:08:21,822 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;@50c45ca3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:08:21,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 05:08:21,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 867 states, 864 states have (on average 1.9710648148148149) internal successors, (1703), 866 states have internal predecessors, (1703), 0 states have call successors, (0), 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 05:08:21,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 05:08:21,837 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:21,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 05:08:21,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:21,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:21,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1750769947, now seen corresponding path program 1 times [2023-11-29 05:08:21,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:21,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979375640] [2023-11-29 05:08:21,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:21,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:22,038 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 05:08:22,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:22,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979375640] [2023-11-29 05:08:22,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979375640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:22,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:22,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:08:22,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054060283] [2023-11-29 05:08:22,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:22,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:08:22,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:22,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:08:22,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:08:22,072 INFO L87 Difference]: Start difference. First operand has 867 states, 864 states have (on average 1.9710648148148149) internal successors, (1703), 866 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 05:08:25,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:25,727 INFO L93 Difference]: Finished difference Result 2433 states and 4800 transitions. [2023-11-29 05:08:25,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:08:25,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 05:08:25,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:25,750 INFO L225 Difference]: With dead ends: 2433 [2023-11-29 05:08:25,750 INFO L226 Difference]: Without dead ends: 1614 [2023-11-29 05:08:25,755 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 05:08:25,758 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 1008 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:25,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 622 Invalid, 2870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2279 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 05:08:25,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2023-11-29 05:08:25,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1614. [2023-11-29 05:08:25,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1612 states have (on average 1.6495037220843674) internal successors, (2659), 1613 states have internal predecessors, (2659), 0 states have call successors, (0), 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 05:08:25,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2659 transitions. [2023-11-29 05:08:25,870 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2659 transitions. Word has length 6 [2023-11-29 05:08:25,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:25,870 INFO L495 AbstractCegarLoop]: Abstraction has 1614 states and 2659 transitions. [2023-11-29 05:08:25,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 05:08:25,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2659 transitions. [2023-11-29 05:08:25,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 05:08:25,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:25,872 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] [2023-11-29 05:08:25,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:08:25,873 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:25,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:25,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1401331215, now seen corresponding path program 1 times [2023-11-29 05:08:25,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:25,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671469170] [2023-11-29 05:08:25,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:25,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:26,181 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 05:08:26,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:26,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671469170] [2023-11-29 05:08:26,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671469170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:26,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:26,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:08:26,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918704325] [2023-11-29 05:08:26,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:26,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:08:26,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:26,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:08:26,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:08:26,185 INFO L87 Difference]: Start difference. First operand 1614 states and 2659 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 05:08:26,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:26,281 INFO L93 Difference]: Finished difference Result 1672 states and 2751 transitions. [2023-11-29 05:08:26,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:08:26,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-29 05:08:26,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:26,292 INFO L225 Difference]: With dead ends: 1672 [2023-11-29 05:08:26,292 INFO L226 Difference]: Without dead ends: 1614 [2023-11-29 05:08:26,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:08:26,295 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 0 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4833 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:26,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4833 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:08:26,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2023-11-29 05:08:26,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1614. [2023-11-29 05:08:26,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1612 states have (on average 1.61848635235732) internal successors, (2609), 1613 states have internal predecessors, (2609), 0 states have call successors, (0), 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 05:08:26,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2609 transitions. [2023-11-29 05:08:26,339 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2609 transitions. Word has length 25 [2023-11-29 05:08:26,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:26,339 INFO L495 AbstractCegarLoop]: Abstraction has 1614 states and 2609 transitions. [2023-11-29 05:08:26,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 05:08:26,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2609 transitions. [2023-11-29 05:08:26,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 05:08:26,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:26,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:08:26,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:08:26,344 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:26,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:26,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1958226728, now seen corresponding path program 1 times [2023-11-29 05:08:26,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:26,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598715569] [2023-11-29 05:08:26,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:26,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:26,609 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 05:08:26,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:26,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598715569] [2023-11-29 05:08:26,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598715569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:26,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:26,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:08:26,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422104123] [2023-11-29 05:08:26,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:26,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:08:26,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:26,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:08:26,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:08:26,612 INFO L87 Difference]: Start difference. First operand 1614 states and 2609 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 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 05:08:27,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:27,124 INFO L93 Difference]: Finished difference Result 2384 states and 3855 transitions. [2023-11-29 05:08:27,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:08:27,124 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-11-29 05:08:27,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:27,138 INFO L225 Difference]: With dead ends: 2384 [2023-11-29 05:08:27,139 INFO L226 Difference]: Without dead ends: 2329 [2023-11-29 05:08:27,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:08:27,141 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 11585 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11585 SdHoareTripleChecker+Valid, 4253 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:27,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11585 Valid, 4253 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:08:27,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2023-11-29 05:08:27,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 1667. [2023-11-29 05:08:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1665 states have (on average 1.6186186186186187) internal successors, (2695), 1666 states have internal predecessors, (2695), 0 states have call successors, (0), 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 05:08:27,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2695 transitions. [2023-11-29 05:08:27,194 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2695 transitions. Word has length 74 [2023-11-29 05:08:27,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:27,194 INFO L495 AbstractCegarLoop]: Abstraction has 1667 states and 2695 transitions. [2023-11-29 05:08:27,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 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 05:08:27,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2695 transitions. [2023-11-29 05:08:27,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 05:08:27,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:27,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:08:27,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:08:27,198 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:27,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:27,199 INFO L85 PathProgramCache]: Analyzing trace with hash -783812792, now seen corresponding path program 1 times [2023-11-29 05:08:27,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:27,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215393133] [2023-11-29 05:08:27,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:27,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:27,316 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 05:08:27,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:27,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215393133] [2023-11-29 05:08:27,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215393133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:27,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:27,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:08:27,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137579312] [2023-11-29 05:08:27,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:27,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:08:27,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:27,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:08:27,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:08:27,319 INFO L87 Difference]: Start difference. First operand 1667 states and 2695 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 05:08:27,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:27,374 INFO L93 Difference]: Finished difference Result 1872 states and 3026 transitions. [2023-11-29 05:08:27,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:08:27,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-29 05:08:27,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:27,385 INFO L225 Difference]: With dead ends: 1872 [2023-11-29 05:08:27,385 INFO L226 Difference]: Without dead ends: 1764 [2023-11-29 05:08:27,386 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 05:08:27,388 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1498 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:27,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1656 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:08:27,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2023-11-29 05:08:27,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1760. [2023-11-29 05:08:27,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1758 states have (on average 1.617178612059158) internal successors, (2843), 1759 states have internal predecessors, (2843), 0 states have call successors, (0), 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 05:08:27,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2843 transitions. [2023-11-29 05:08:27,441 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2843 transitions. Word has length 76 [2023-11-29 05:08:27,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:27,442 INFO L495 AbstractCegarLoop]: Abstraction has 1760 states and 2843 transitions. [2023-11-29 05:08:27,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 05:08:27,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2843 transitions. [2023-11-29 05:08:27,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 05:08:27,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:27,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:08:27,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:08:27,445 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:27,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:27,445 INFO L85 PathProgramCache]: Analyzing trace with hash -781667840, now seen corresponding path program 1 times [2023-11-29 05:08:27,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:27,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400455560] [2023-11-29 05:08:27,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:27,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:27,955 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 05:08:27,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:27,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400455560] [2023-11-29 05:08:27,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400455560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:27,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:27,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:08:27,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051243161] [2023-11-29 05:08:27,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:27,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:08:27,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:27,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:08:27,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:08:27,959 INFO L87 Difference]: Start difference. First operand 1760 states and 2843 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 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 05:08:28,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:28,401 INFO L93 Difference]: Finished difference Result 1963 states and 3167 transitions. [2023-11-29 05:08:28,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:08:28,401 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-29 05:08:28,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:28,412 INFO L225 Difference]: With dead ends: 1963 [2023-11-29 05:08:28,412 INFO L226 Difference]: Without dead ends: 1762 [2023-11-29 05:08:28,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:08:28,414 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 4560 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4560 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:28,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4560 Valid, 2084 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:08:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2023-11-29 05:08:28,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1760. [2023-11-29 05:08:28,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1758 states have (on average 1.6160409556313993) internal successors, (2841), 1759 states have internal predecessors, (2841), 0 states have call successors, (0), 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 05:08:28,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2841 transitions. [2023-11-29 05:08:28,475 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2841 transitions. Word has length 76 [2023-11-29 05:08:28,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:28,476 INFO L495 AbstractCegarLoop]: Abstraction has 1760 states and 2841 transitions. [2023-11-29 05:08:28,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 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 05:08:28,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2841 transitions. [2023-11-29 05:08:28,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 05:08:28,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:28,478 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:08:28,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:08:28,478 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:28,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:28,479 INFO L85 PathProgramCache]: Analyzing trace with hash -948794983, now seen corresponding path program 1 times [2023-11-29 05:08:28,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:28,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356105721] [2023-11-29 05:08:28,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:28,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:28,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:08:28,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:28,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356105721] [2023-11-29 05:08:28,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356105721] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:28,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:28,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:08:28,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473303757] [2023-11-29 05:08:28,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:28,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:08:28,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:28,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:08:28,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:08:28,584 INFO L87 Difference]: Start difference. First operand 1760 states and 2841 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 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 05:08:32,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:32,352 INFO L93 Difference]: Finished difference Result 4766 states and 7768 transitions. [2023-11-29 05:08:32,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:08:32,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-29 05:08:32,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:32,368 INFO L225 Difference]: With dead ends: 4766 [2023-11-29 05:08:32,368 INFO L226 Difference]: Without dead ends: 3262 [2023-11-29 05:08:32,370 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 05:08:32,371 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 869 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:32,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 615 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 05:08:32,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2023-11-29 05:08:32,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 3262. [2023-11-29 05:08:32,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3262 states, 3260 states have (on average 1.429754601226994) internal successors, (4661), 3261 states have internal predecessors, (4661), 0 states have call successors, (0), 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 05:08:32,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3262 states to 3262 states and 4661 transitions. [2023-11-29 05:08:32,427 INFO L78 Accepts]: Start accepts. Automaton has 3262 states and 4661 transitions. Word has length 77 [2023-11-29 05:08:32,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:32,427 INFO L495 AbstractCegarLoop]: Abstraction has 3262 states and 4661 transitions. [2023-11-29 05:08:32,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 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 05:08:32,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3262 states and 4661 transitions. [2023-11-29 05:08:32,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 05:08:32,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:32,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:08:32,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:08:32,429 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:32,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:32,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1409717390, now seen corresponding path program 1 times [2023-11-29 05:08:32,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:32,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508712856] [2023-11-29 05:08:32,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:32,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:32,586 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 05:08:32,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:32,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508712856] [2023-11-29 05:08:32,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508712856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:32,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:32,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:08:32,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226395378] [2023-11-29 05:08:32,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:32,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:08:32,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:32,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:08:32,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:08:32,590 INFO L87 Difference]: Start difference. First operand 3262 states and 4661 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:08:32,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:32,635 INFO L93 Difference]: Finished difference Result 3270 states and 4670 transitions. [2023-11-29 05:08:32,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:08:32,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-29 05:08:32,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:32,648 INFO L225 Difference]: With dead ends: 3270 [2023-11-29 05:08:32,648 INFO L226 Difference]: Without dead ends: 3268 [2023-11-29 05:08:32,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:08:32,650 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 1 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4726 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:32,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4726 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:08:32,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2023-11-29 05:08:32,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 3266. [2023-11-29 05:08:32,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3266 states, 3264 states have (on average 1.428921568627451) internal successors, (4664), 3265 states have internal predecessors, (4664), 0 states have call successors, (0), 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 05:08:32,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 4664 transitions. [2023-11-29 05:08:32,710 INFO L78 Accepts]: Start accepts. Automaton has 3266 states and 4664 transitions. Word has length 77 [2023-11-29 05:08:32,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:32,710 INFO L495 AbstractCegarLoop]: Abstraction has 3266 states and 4664 transitions. [2023-11-29 05:08:32,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:08:32,710 INFO L276 IsEmpty]: Start isEmpty. Operand 3266 states and 4664 transitions. [2023-11-29 05:08:32,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 05:08:32,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:32,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:08:32,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:08:32,711 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:32,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:32,712 INFO L85 PathProgramCache]: Analyzing trace with hash 89162976, now seen corresponding path program 1 times [2023-11-29 05:08:32,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:32,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947231553] [2023-11-29 05:08:32,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:32,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:32,765 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 05:08:32,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:32,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947231553] [2023-11-29 05:08:32,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947231553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:32,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:32,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:08:32,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174134752] [2023-11-29 05:08:32,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:32,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:08:32,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:32,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:08:32,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:08:32,768 INFO L87 Difference]: Start difference. First operand 3266 states and 4664 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 05:08:32,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:32,807 INFO L93 Difference]: Finished difference Result 3660 states and 5284 transitions. [2023-11-29 05:08:32,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:08:32,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 05:08:32,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:32,820 INFO L225 Difference]: With dead ends: 3660 [2023-11-29 05:08:32,820 INFO L226 Difference]: Without dead ends: 3455 [2023-11-29 05:08:32,821 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 05:08:32,822 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 1515 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:32,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1737 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:08:32,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3455 states. [2023-11-29 05:08:32,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3455 to 3453. [2023-11-29 05:08:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3453 states, 3451 states have (on average 1.4358157055925818) internal successors, (4955), 3452 states have internal predecessors, (4955), 0 states have call successors, (0), 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 05:08:32,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3453 states to 3453 states and 4955 transitions. [2023-11-29 05:08:32,881 INFO L78 Accepts]: Start accepts. Automaton has 3453 states and 4955 transitions. Word has length 78 [2023-11-29 05:08:32,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:32,881 INFO L495 AbstractCegarLoop]: Abstraction has 3453 states and 4955 transitions. [2023-11-29 05:08:32,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 05:08:32,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3453 states and 4955 transitions. [2023-11-29 05:08:32,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 05:08:32,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:32,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:08:32,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:08:32,883 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:32,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:32,884 INFO L85 PathProgramCache]: Analyzing trace with hash -321223712, now seen corresponding path program 1 times [2023-11-29 05:08:32,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:32,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094485310] [2023-11-29 05:08:32,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:32,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:32,930 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 05:08:32,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:32,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094485310] [2023-11-29 05:08:32,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094485310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:32,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:32,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:08:32,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145505707] [2023-11-29 05:08:32,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:32,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:08:32,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:32,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:08:32,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:08:32,933 INFO L87 Difference]: Start difference. First operand 3453 states and 4955 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 05:08:33,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:33,017 INFO L93 Difference]: Finished difference Result 4205 states and 6129 transitions. [2023-11-29 05:08:33,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:08:33,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 05:08:33,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:33,036 INFO L225 Difference]: With dead ends: 4205 [2023-11-29 05:08:33,036 INFO L226 Difference]: Without dead ends: 3813 [2023-11-29 05:08:33,038 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 05:08:33,038 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1513 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:33,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1739 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:08:33,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3813 states. [2023-11-29 05:08:33,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3813 to 3811. [2023-11-29 05:08:33,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3811 states, 3809 states have (on average 1.44526122341822) internal successors, (5505), 3810 states have internal predecessors, (5505), 0 states have call successors, (0), 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 05:08:33,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3811 states to 3811 states and 5505 transitions. [2023-11-29 05:08:33,142 INFO L78 Accepts]: Start accepts. Automaton has 3811 states and 5505 transitions. Word has length 78 [2023-11-29 05:08:33,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:33,142 INFO L495 AbstractCegarLoop]: Abstraction has 3811 states and 5505 transitions. [2023-11-29 05:08:33,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 05:08:33,142 INFO L276 IsEmpty]: Start isEmpty. Operand 3811 states and 5505 transitions. [2023-11-29 05:08:33,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 05:08:33,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:33,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:08:33,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:08:33,144 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:33,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:33,144 INFO L85 PathProgramCache]: Analyzing trace with hash -549862944, now seen corresponding path program 1 times [2023-11-29 05:08:33,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:33,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624181731] [2023-11-29 05:08:33,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:33,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:33,212 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 05:08:33,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:33,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624181731] [2023-11-29 05:08:33,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624181731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:33,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:33,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:08:33,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680483981] [2023-11-29 05:08:33,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:33,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:08:33,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:33,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:08:33,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:08:33,215 INFO L87 Difference]: Start difference. First operand 3811 states and 5505 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 05:08:33,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:33,282 INFO L93 Difference]: Finished difference Result 5247 states and 7723 transitions. [2023-11-29 05:08:33,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:08:33,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 05:08:33,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:33,303 INFO L225 Difference]: With dead ends: 5247 [2023-11-29 05:08:33,303 INFO L226 Difference]: Without dead ends: 4497 [2023-11-29 05:08:33,305 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 05:08:33,306 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1509 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:33,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1735 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:08:33,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4497 states. [2023-11-29 05:08:33,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4497 to 4495. [2023-11-29 05:08:33,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4495 states, 4493 states have (on average 1.4558201647006455) internal successors, (6541), 4494 states have internal predecessors, (6541), 0 states have call successors, (0), 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 05:08:33,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4495 states to 4495 states and 6541 transitions. [2023-11-29 05:08:33,433 INFO L78 Accepts]: Start accepts. Automaton has 4495 states and 6541 transitions. Word has length 78 [2023-11-29 05:08:33,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:33,433 INFO L495 AbstractCegarLoop]: Abstraction has 4495 states and 6541 transitions. [2023-11-29 05:08:33,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 05:08:33,433 INFO L276 IsEmpty]: Start isEmpty. Operand 4495 states and 6541 transitions. [2023-11-29 05:08:33,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 05:08:33,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:33,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:08:33,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:08:33,435 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:33,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:33,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1175519008, now seen corresponding path program 1 times [2023-11-29 05:08:33,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:33,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446815277] [2023-11-29 05:08:33,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:33,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:08:33,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:33,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446815277] [2023-11-29 05:08:33,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446815277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:33,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:33,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:08:33,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905556208] [2023-11-29 05:08:33,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:33,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:08:33,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:33,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:08:33,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:08:33,502 INFO L87 Difference]: Start difference. First operand 4495 states and 6541 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 05:08:33,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:33,606 INFO L93 Difference]: Finished difference Result 7235 states and 10719 transitions. [2023-11-29 05:08:33,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:08:33,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 05:08:33,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:33,619 INFO L225 Difference]: With dead ends: 7235 [2023-11-29 05:08:33,619 INFO L226 Difference]: Without dead ends: 5801 [2023-11-29 05:08:33,623 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 05:08:33,623 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 1507 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:33,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1737 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:08:33,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5801 states. [2023-11-29 05:08:33,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5801 to 5799. [2023-11-29 05:08:33,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5799 states, 5797 states have (on average 1.4636881145420044) internal successors, (8485), 5798 states have internal predecessors, (8485), 0 states have call successors, (0), 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 05:08:33,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5799 states to 5799 states and 8485 transitions. [2023-11-29 05:08:33,783 INFO L78 Accepts]: Start accepts. Automaton has 5799 states and 8485 transitions. Word has length 78 [2023-11-29 05:08:33,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:33,783 INFO L495 AbstractCegarLoop]: Abstraction has 5799 states and 8485 transitions. [2023-11-29 05:08:33,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 05:08:33,784 INFO L276 IsEmpty]: Start isEmpty. Operand 5799 states and 8485 transitions. [2023-11-29 05:08:33,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 05:08:33,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:33,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:08:33,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:08:33,785 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:33,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:33,786 INFO L85 PathProgramCache]: Analyzing trace with hash -286785568, now seen corresponding path program 1 times [2023-11-29 05:08:33,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:33,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749675376] [2023-11-29 05:08:33,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:33,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:33,851 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 05:08:33,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:33,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749675376] [2023-11-29 05:08:33,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749675376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:33,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:33,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:08:33,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465008758] [2023-11-29 05:08:33,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:33,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:08:33,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:33,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:08:33,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:08:33,853 INFO L87 Difference]: Start difference. First operand 5799 states and 8485 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 05:08:34,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:34,003 INFO L93 Difference]: Finished difference Result 11019 states and 16327 transitions. [2023-11-29 05:08:34,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:08:34,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 05:08:34,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:34,020 INFO L225 Difference]: With dead ends: 11019 [2023-11-29 05:08:34,021 INFO L226 Difference]: Without dead ends: 8281 [2023-11-29 05:08:34,026 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 05:08:34,027 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 1505 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:34,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1739 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:08:34,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8281 states. [2023-11-29 05:08:34,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8281 to 8279. [2023-11-29 05:08:34,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8279 states, 8277 states have (on average 1.463936208771294) internal successors, (12117), 8278 states have internal predecessors, (12117), 0 states have call successors, (0), 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 05:08:34,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8279 states to 8279 states and 12117 transitions. [2023-11-29 05:08:34,284 INFO L78 Accepts]: Start accepts. Automaton has 8279 states and 12117 transitions. Word has length 78 [2023-11-29 05:08:34,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:34,284 INFO L495 AbstractCegarLoop]: Abstraction has 8279 states and 12117 transitions. [2023-11-29 05:08:34,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 05:08:34,284 INFO L276 IsEmpty]: Start isEmpty. Operand 8279 states and 12117 transitions. [2023-11-29 05:08:34,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 05:08:34,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:34,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:08:34,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:08:34,286 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:34,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:34,286 INFO L85 PathProgramCache]: Analyzing trace with hash -589806880, now seen corresponding path program 1 times [2023-11-29 05:08:34,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:34,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441098904] [2023-11-29 05:08:34,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:34,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:34,352 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 05:08:34,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:34,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441098904] [2023-11-29 05:08:34,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441098904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:34,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:34,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:08:34,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753749812] [2023-11-29 05:08:34,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:34,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:08:34,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:34,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:08:34,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:08:34,354 INFO L87 Difference]: Start difference. First operand 8279 states and 12117 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 05:08:34,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:34,620 INFO L93 Difference]: Finished difference Result 18203 states and 26775 transitions. [2023-11-29 05:08:34,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:08:34,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 05:08:34,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:34,646 INFO L225 Difference]: With dead ends: 18203 [2023-11-29 05:08:34,646 INFO L226 Difference]: Without dead ends: 12985 [2023-11-29 05:08:34,654 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 05:08:34,655 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 1511 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:34,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1741 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:08:34,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12985 states. [2023-11-29 05:08:35,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12985 to 12983. [2023-11-29 05:08:35,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12983 states, 12981 states have (on average 1.4535860103227793) internal successors, (18869), 12982 states have internal predecessors, (18869), 0 states have call successors, (0), 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 05:08:35,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12983 states to 12983 states and 18869 transitions. [2023-11-29 05:08:35,147 INFO L78 Accepts]: Start accepts. Automaton has 12983 states and 18869 transitions. Word has length 78 [2023-11-29 05:08:35,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:35,148 INFO L495 AbstractCegarLoop]: Abstraction has 12983 states and 18869 transitions. [2023-11-29 05:08:35,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 05:08:35,148 INFO L276 IsEmpty]: Start isEmpty. Operand 12983 states and 18869 transitions. [2023-11-29 05:08:35,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 05:08:35,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:35,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:08:35,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:08:35,150 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:35,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:35,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1500697979, now seen corresponding path program 1 times [2023-11-29 05:08:35,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:35,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32633407] [2023-11-29 05:08:35,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:35,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:35,227 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 05:08:35,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:35,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32633407] [2023-11-29 05:08:35,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32633407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:35,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:35,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:08:35,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146469118] [2023-11-29 05:08:35,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:35,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:08:35,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:35,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:08:35,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:08:35,229 INFO L87 Difference]: Start difference. First operand 12983 states and 18869 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 05:08:35,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:35,563 INFO L93 Difference]: Finished difference Result 23230 states and 34107 transitions. [2023-11-29 05:08:35,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:08:35,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-29 05:08:35,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:35,594 INFO L225 Difference]: With dead ends: 23230 [2023-11-29 05:08:35,594 INFO L226 Difference]: Without dead ends: 17723 [2023-11-29 05:08:35,603 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 05:08:35,603 INFO L413 NwaCegarLoop]: 1649 mSDtfsCounter, 1514 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:35,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:08:35,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17723 states. [2023-11-29 05:08:36,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17723 to 17721. [2023-11-29 05:08:36,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17721 states, 17719 states have (on average 1.4514927478977369) internal successors, (25719), 17720 states have internal predecessors, (25719), 0 states have call successors, (0), 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 05:08:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17721 states to 17721 states and 25719 transitions. [2023-11-29 05:08:36,174 INFO L78 Accepts]: Start accepts. Automaton has 17721 states and 25719 transitions. Word has length 80 [2023-11-29 05:08:36,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:36,174 INFO L495 AbstractCegarLoop]: Abstraction has 17721 states and 25719 transitions. [2023-11-29 05:08:36,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 05:08:36,175 INFO L276 IsEmpty]: Start isEmpty. Operand 17721 states and 25719 transitions. [2023-11-29 05:08:36,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 05:08:36,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:36,176 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:08:36,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:08:36,176 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:36,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:36,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2007488945, now seen corresponding path program 1 times [2023-11-29 05:08:36,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:36,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543969464] [2023-11-29 05:08:36,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:36,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:36,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:08:36,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:36,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543969464] [2023-11-29 05:08:36,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543969464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:36,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:36,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:08:36,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698049756] [2023-11-29 05:08:36,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:36,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:08:36,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:36,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:08:36,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:08:36,284 INFO L87 Difference]: Start difference. First operand 17721 states and 25719 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 05:08:40,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:40,128 INFO L93 Difference]: Finished difference Result 23733 states and 34287 transitions. [2023-11-29 05:08:40,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:08:40,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-11-29 05:08:40,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:40,149 INFO L225 Difference]: With dead ends: 23733 [2023-11-29 05:08:40,149 INFO L226 Difference]: Without dead ends: 20727 [2023-11-29 05:08:40,154 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 05:08:40,155 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 1059 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 2933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:40,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 723 Invalid, 2933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 05:08:40,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20727 states. [2023-11-29 05:08:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20727 to 20725. [2023-11-29 05:08:40,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20725 states, 20723 states have (on average 1.41967861796072) internal successors, (29420), 20724 states have internal predecessors, (29420), 0 states have call successors, (0), 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 05:08:40,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20725 states to 20725 states and 29420 transitions. [2023-11-29 05:08:40,579 INFO L78 Accepts]: Start accepts. Automaton has 20725 states and 29420 transitions. Word has length 81 [2023-11-29 05:08:40,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:40,579 INFO L495 AbstractCegarLoop]: Abstraction has 20725 states and 29420 transitions. [2023-11-29 05:08:40,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 05:08:40,579 INFO L276 IsEmpty]: Start isEmpty. Operand 20725 states and 29420 transitions. [2023-11-29 05:08:40,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 05:08:40,583 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:40,584 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:08:40,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 05:08:40,584 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:40,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:40,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1592155180, now seen corresponding path program 1 times [2023-11-29 05:08:40,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:40,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314809618] [2023-11-29 05:08:40,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:40,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:40,765 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:08:40,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:40,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314809618] [2023-11-29 05:08:40,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314809618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:40,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:40,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:08:40,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895657844] [2023-11-29 05:08:40,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:40,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:08:40,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:40,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:08:40,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:08:40,768 INFO L87 Difference]: Start difference. First operand 20725 states and 29420 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 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 05:08:43,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:43,017 INFO L93 Difference]: Finished difference Result 126277 states and 183220 transitions. [2023-11-29 05:08:43,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:08:43,018 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 05:08:43,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:43,133 INFO L225 Difference]: With dead ends: 126277 [2023-11-29 05:08:43,133 INFO L226 Difference]: Without dead ends: 111619 [2023-11-29 05:08:43,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:08:43,160 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 9880 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9880 SdHoareTripleChecker+Valid, 4406 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:43,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9880 Valid, 4406 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:08:43,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111619 states. [2023-11-29 05:08:44,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111619 to 35381. [2023-11-29 05:08:44,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35381 states, 35379 states have (on average 1.4303400322225048) internal successors, (50604), 35380 states have internal predecessors, (50604), 0 states have call successors, (0), 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 05:08:44,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35381 states to 35381 states and 50604 transitions. [2023-11-29 05:08:44,674 INFO L78 Accepts]: Start accepts. Automaton has 35381 states and 50604 transitions. Word has length 100 [2023-11-29 05:08:44,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:44,675 INFO L495 AbstractCegarLoop]: Abstraction has 35381 states and 50604 transitions. [2023-11-29 05:08:44,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 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 05:08:44,675 INFO L276 IsEmpty]: Start isEmpty. Operand 35381 states and 50604 transitions. [2023-11-29 05:08:44,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 05:08:44,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:44,682 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:08:44,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 05:08:44,683 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:44,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:44,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1181768492, now seen corresponding path program 1 times [2023-11-29 05:08:44,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:44,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463513692] [2023-11-29 05:08:44,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:44,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:44,979 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 05:08:44,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:44,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463513692] [2023-11-29 05:08:44,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463513692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:44,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:44,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:08:44,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018253288] [2023-11-29 05:08:44,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:44,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:08:44,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:44,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:08:44,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:08:44,982 INFO L87 Difference]: Start difference. First operand 35381 states and 50604 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:08:47,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:47,953 INFO L93 Difference]: Finished difference Result 140933 states and 204404 transitions. [2023-11-29 05:08:47,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:08:47,953 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 05:08:47,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:48,072 INFO L225 Difference]: With dead ends: 140933 [2023-11-29 05:08:48,072 INFO L226 Difference]: Without dead ends: 126275 [2023-11-29 05:08:48,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:08:48,094 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 9924 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9924 SdHoareTripleChecker+Valid, 4274 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:48,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9924 Valid, 4274 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:08:48,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126275 states. [2023-11-29 05:08:50,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126275 to 57397. [2023-11-29 05:08:50,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57397 states, 57395 states have (on average 1.4325289659377995) internal successors, (82220), 57396 states have internal predecessors, (82220), 0 states have call successors, (0), 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 05:08:50,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57397 states to 57397 states and 82220 transitions. [2023-11-29 05:08:50,598 INFO L78 Accepts]: Start accepts. Automaton has 57397 states and 82220 transitions. Word has length 100 [2023-11-29 05:08:50,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:50,598 INFO L495 AbstractCegarLoop]: Abstraction has 57397 states and 82220 transitions. [2023-11-29 05:08:50,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:08:50,598 INFO L276 IsEmpty]: Start isEmpty. Operand 57397 states and 82220 transitions. [2023-11-29 05:08:50,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 05:08:50,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:50,603 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:08:50,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 05:08:50,603 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:50,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:50,604 INFO L85 PathProgramCache]: Analyzing trace with hash 953129260, now seen corresponding path program 1 times [2023-11-29 05:08:50,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:50,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231362419] [2023-11-29 05:08:50,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:50,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 05:08:50,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:50,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231362419] [2023-11-29 05:08:50,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231362419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:50,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:50,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:08:50,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586417502] [2023-11-29 05:08:50,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:50,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:08:50,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:50,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:08:50,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:08:50,839 INFO L87 Difference]: Start difference. First operand 57397 states and 82220 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 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 05:08:54,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:54,549 INFO L93 Difference]: Finished difference Result 155589 states and 225588 transitions. [2023-11-29 05:08:54,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:08:54,549 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 05:08:54,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:54,691 INFO L225 Difference]: With dead ends: 155589 [2023-11-29 05:08:54,692 INFO L226 Difference]: Without dead ends: 140931 [2023-11-29 05:08:54,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:08:54,716 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 9999 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9999 SdHoareTripleChecker+Valid, 4250 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:54,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9999 Valid, 4250 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:08:54,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140931 states. [2023-11-29 05:08:57,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140931 to 72053. [2023-11-29 05:08:57,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72053 states, 72051 states have (on average 1.4351501020110755) internal successors, (103404), 72052 states have internal predecessors, (103404), 0 states have call successors, (0), 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 05:08:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72053 states to 72053 states and 103404 transitions. [2023-11-29 05:08:57,757 INFO L78 Accepts]: Start accepts. Automaton has 72053 states and 103404 transitions. Word has length 100 [2023-11-29 05:08:57,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:57,758 INFO L495 AbstractCegarLoop]: Abstraction has 72053 states and 103404 transitions. [2023-11-29 05:08:57,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 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 05:08:57,758 INFO L276 IsEmpty]: Start isEmpty. Operand 72053 states and 103404 transitions. [2023-11-29 05:08:57,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 05:08:57,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:57,764 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:08:57,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 05:08:57,764 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:57,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:57,765 INFO L85 PathProgramCache]: Analyzing trace with hash 327473196, now seen corresponding path program 1 times [2023-11-29 05:08:57,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:57,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689243883] [2023-11-29 05:08:57,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:57,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:57,956 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 05:08:57,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:57,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689243883] [2023-11-29 05:08:57,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689243883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:57,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:57,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:08:57,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576095041] [2023-11-29 05:08:57,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:57,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:08:57,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:57,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:08:57,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:08:57,959 INFO L87 Difference]: Start difference. First operand 72053 states and 103404 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 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 05:09:02,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:02,285 INFO L93 Difference]: Finished difference Result 170245 states and 246772 transitions. [2023-11-29 05:09:02,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:09:02,286 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 05:09:02,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:02,444 INFO L225 Difference]: With dead ends: 170245 [2023-11-29 05:09:02,444 INFO L226 Difference]: Without dead ends: 155587 [2023-11-29 05:09:02,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:09:02,470 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 10065 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10065 SdHoareTripleChecker+Valid, 4214 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:02,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10065 Valid, 4214 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:09:02,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155587 states. [2023-11-29 05:09:05,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155587 to 86709. [2023-11-29 05:09:05,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86709 states, 86707 states have (on average 1.4368851419147244) internal successors, (124588), 86708 states have internal predecessors, (124588), 0 states have call successors, (0), 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 05:09:05,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86709 states to 86709 states and 124588 transitions. [2023-11-29 05:09:05,726 INFO L78 Accepts]: Start accepts. Automaton has 86709 states and 124588 transitions. Word has length 100 [2023-11-29 05:09:05,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:05,727 INFO L495 AbstractCegarLoop]: Abstraction has 86709 states and 124588 transitions. [2023-11-29 05:09:05,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 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 05:09:05,727 INFO L276 IsEmpty]: Start isEmpty. Operand 86709 states and 124588 transitions. [2023-11-29 05:09:05,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 05:09:05,733 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:05,733 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:09:05,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 05:09:05,733 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:09:05,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:05,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1216206636, now seen corresponding path program 1 times [2023-11-29 05:09:05,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:05,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075357438] [2023-11-29 05:09:05,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:05,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 05:09:05,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:05,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075357438] [2023-11-29 05:09:05,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075357438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:05,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:05,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:09:05,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703305613] [2023-11-29 05:09:05,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:05,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:09:05,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:05,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:09:05,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:09:05,944 INFO L87 Difference]: Start difference. First operand 86709 states and 124588 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 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 05:09:11,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:11,222 INFO L93 Difference]: Finished difference Result 184901 states and 267956 transitions. [2023-11-29 05:09:11,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:09:11,223 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 05:09:11,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:11,413 INFO L225 Difference]: With dead ends: 184901 [2023-11-29 05:09:11,413 INFO L226 Difference]: Without dead ends: 170243 [2023-11-29 05:09:11,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:09:11,447 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 9915 mSDsluCounter, 2660 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9915 SdHoareTripleChecker+Valid, 4321 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:11,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9915 Valid, 4321 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:09:11,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170243 states. [2023-11-29 05:09:15,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170243 to 101365. [2023-11-29 05:09:15,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101365 states, 101363 states have (on average 1.4381184455866538) internal successors, (145772), 101364 states have internal predecessors, (145772), 0 states have call successors, (0), 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 05:09:15,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101365 states to 101365 states and 145772 transitions. [2023-11-29 05:09:15,385 INFO L78 Accepts]: Start accepts. Automaton has 101365 states and 145772 transitions. Word has length 100 [2023-11-29 05:09:15,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:15,385 INFO L495 AbstractCegarLoop]: Abstraction has 101365 states and 145772 transitions. [2023-11-29 05:09:15,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 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 05:09:15,386 INFO L276 IsEmpty]: Start isEmpty. Operand 101365 states and 145772 transitions. [2023-11-29 05:09:15,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 05:09:15,390 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:15,390 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:09:15,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 05:09:15,390 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:09:15,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:15,391 INFO L85 PathProgramCache]: Analyzing trace with hash 913185324, now seen corresponding path program 1 times [2023-11-29 05:09:15,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:15,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289256475] [2023-11-29 05:09:15,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:15,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:09:15,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:15,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289256475] [2023-11-29 05:09:15,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289256475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:15,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:15,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:09:15,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981050491] [2023-11-29 05:09:15,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:15,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:09:15,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:15,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:09:15,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:09:15,594 INFO L87 Difference]: Start difference. First operand 101365 states and 145772 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 05:09:21,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:21,031 INFO L93 Difference]: Finished difference Result 199557 states and 289140 transitions. [2023-11-29 05:09:21,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:09:21,031 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 05:09:21,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:21,219 INFO L225 Difference]: With dead ends: 199557 [2023-11-29 05:09:21,219 INFO L226 Difference]: Without dead ends: 184899 [2023-11-29 05:09:21,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:09:21,251 INFO L413 NwaCegarLoop]: 1666 mSDtfsCounter, 9811 mSDsluCounter, 2859 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9811 SdHoareTripleChecker+Valid, 4525 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:21,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9811 Valid, 4525 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:09:21,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184899 states. [2023-11-29 05:09:25,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184899 to 116021. [2023-11-29 05:09:25,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116021 states, 116019 states have (on average 1.4390401572156284) internal successors, (166956), 116020 states have internal predecessors, (166956), 0 states have call successors, (0), 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 05:09:26,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116021 states to 116021 states and 166956 transitions. [2023-11-29 05:09:26,056 INFO L78 Accepts]: Start accepts. Automaton has 116021 states and 166956 transitions. Word has length 100 [2023-11-29 05:09:26,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:26,056 INFO L495 AbstractCegarLoop]: Abstraction has 116021 states and 166956 transitions. [2023-11-29 05:09:26,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 05:09:26,056 INFO L276 IsEmpty]: Start isEmpty. Operand 116021 states and 166956 transitions. [2023-11-29 05:09:26,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 05:09:26,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:26,061 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:09:26,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 05:09:26,062 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:09:26,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:26,062 INFO L85 PathProgramCache]: Analyzing trace with hash 931312724, now seen corresponding path program 1 times [2023-11-29 05:09:26,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:26,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558719615] [2023-11-29 05:09:26,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:26,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:26,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:26,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558719615] [2023-11-29 05:09:26,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558719615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:26,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:26,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:09:26,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46606896] [2023-11-29 05:09:26,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:26,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:09:26,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:26,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:09:26,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:09:26,176 INFO L87 Difference]: Start difference. First operand 116021 states and 166956 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 05:09:28,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:28,850 INFO L93 Difference]: Finished difference Result 192848 states and 279302 transitions. [2023-11-29 05:09:28,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:09:28,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-11-29 05:09:28,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:28,910 INFO L225 Difference]: With dead ends: 192848 [2023-11-29 05:09:28,910 INFO L226 Difference]: Without dead ends: 82894 [2023-11-29 05:09:28,929 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 05:09:28,929 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 66 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:28,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 3200 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:09:28,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82894 states. [2023-11-29 05:09:32,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82894 to 82892. [2023-11-29 05:09:32,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82892 states, 82890 states have (on average 1.440788997466522) internal successors, (119427), 82891 states have internal predecessors, (119427), 0 states have call successors, (0), 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 05:09:32,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82892 states to 82892 states and 119427 transitions. [2023-11-29 05:09:32,238 INFO L78 Accepts]: Start accepts. Automaton has 82892 states and 119427 transitions. Word has length 102 [2023-11-29 05:09:32,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:32,239 INFO L495 AbstractCegarLoop]: Abstraction has 82892 states and 119427 transitions. [2023-11-29 05:09:32,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 05:09:32,239 INFO L276 IsEmpty]: Start isEmpty. Operand 82892 states and 119427 transitions. [2023-11-29 05:09:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 05:09:32,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:32,241 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:09:32,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 05:09:32,241 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:09:32,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:32,242 INFO L85 PathProgramCache]: Analyzing trace with hash -234201391, now seen corresponding path program 1 times [2023-11-29 05:09:32,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:32,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073651193] [2023-11-29 05:09:32,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:32,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:09:32,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:32,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073651193] [2023-11-29 05:09:32,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073651193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:32,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:32,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:09:32,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025025116] [2023-11-29 05:09:32,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:32,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:09:32,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:32,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:09:32,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:09:32,455 INFO L87 Difference]: Start difference. First operand 82892 states and 119427 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 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 05:09:37,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:37,143 INFO L93 Difference]: Finished difference Result 154588 states and 224267 transitions. [2023-11-29 05:09:37,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:09:37,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-11-29 05:09:37,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:37,261 INFO L225 Difference]: With dead ends: 154588 [2023-11-29 05:09:37,261 INFO L226 Difference]: Without dead ends: 144346 [2023-11-29 05:09:37,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:09:37,276 INFO L413 NwaCegarLoop]: 1656 mSDtfsCounter, 9891 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9891 SdHoareTripleChecker+Valid, 4621 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:37,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9891 Valid, 4621 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:09:37,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144346 states. [2023-11-29 05:09:40,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144346 to 93132. [2023-11-29 05:09:40,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93132 states, 93130 states have (on average 1.4418017824546334) internal successors, (134275), 93131 states have internal predecessors, (134275), 0 states have call successors, (0), 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 05:09:40,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93132 states to 93132 states and 134275 transitions. [2023-11-29 05:09:40,934 INFO L78 Accepts]: Start accepts. Automaton has 93132 states and 134275 transitions. Word has length 102 [2023-11-29 05:09:40,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:40,934 INFO L495 AbstractCegarLoop]: Abstraction has 93132 states and 134275 transitions. [2023-11-29 05:09:40,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 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 05:09:40,934 INFO L276 IsEmpty]: Start isEmpty. Operand 93132 states and 134275 transitions. [2023-11-29 05:09:40,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 05:09:40,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:40,938 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:09:40,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 05:09:40,938 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:09:40,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:40,938 INFO L85 PathProgramCache]: Analyzing trace with hash -369919028, now seen corresponding path program 1 times [2023-11-29 05:09:40,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:40,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741516759] [2023-11-29 05:09:40,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:40,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:41,051 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:41,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:41,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741516759] [2023-11-29 05:09:41,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741516759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:41,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:41,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:09:41,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416434344] [2023-11-29 05:09:41,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:41,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:09:41,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:41,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:09:41,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:09:41,053 INFO L87 Difference]: Start difference. First operand 93132 states and 134275 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 05:09:42,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:42,930 INFO L93 Difference]: Finished difference Result 136656 states and 197381 transitions. [2023-11-29 05:09:42,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:09:42,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-11-29 05:09:42,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:42,977 INFO L225 Difference]: With dead ends: 136656 [2023-11-29 05:09:42,977 INFO L226 Difference]: Without dead ends: 49614 [2023-11-29 05:09:43,006 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 05:09:43,006 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 61 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:43,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3185 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:09:43,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49614 states. [2023-11-29 05:09:44,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49614 to 49612. [2023-11-29 05:09:44,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49612 states, 49610 states have (on average 1.42364442652691) internal successors, (70627), 49611 states have internal predecessors, (70627), 0 states have call successors, (0), 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 05:09:44,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49612 states to 49612 states and 70627 transitions. [2023-11-29 05:09:44,877 INFO L78 Accepts]: Start accepts. Automaton has 49612 states and 70627 transitions. Word has length 103 [2023-11-29 05:09:44,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:44,878 INFO L495 AbstractCegarLoop]: Abstraction has 49612 states and 70627 transitions. [2023-11-29 05:09:44,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 05:09:44,878 INFO L276 IsEmpty]: Start isEmpty. Operand 49612 states and 70627 transitions. [2023-11-29 05:09:44,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-29 05:09:44,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:44,880 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:09:44,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 05:09:44,881 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:09:44,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:44,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1805028038, now seen corresponding path program 1 times [2023-11-29 05:09:44,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:44,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900736051] [2023-11-29 05:09:44,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:44,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:44,973 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:44,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:44,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900736051] [2023-11-29 05:09:44,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900736051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:44,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:44,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:09:44,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69236748] [2023-11-29 05:09:44,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:44,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:09:44,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:44,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:09:44,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:09:44,975 INFO L87 Difference]: Start difference. First operand 49612 states and 70627 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 05:09:45,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:45,975 INFO L93 Difference]: Finished difference Result 71376 states and 101909 transitions. [2023-11-29 05:09:45,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:09:45,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-11-29 05:09:45,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:46,001 INFO L225 Difference]: With dead ends: 71376 [2023-11-29 05:09:46,001 INFO L226 Difference]: Without dead ends: 27854 [2023-11-29 05:09:46,018 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 05:09:46,018 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 58 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:46,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3170 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:09:46,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27854 states. [2023-11-29 05:09:47,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27854 to 27852. [2023-11-29 05:09:47,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27852 states, 27850 states have (on average 1.4030520646319569) internal successors, (39075), 27851 states have internal predecessors, (39075), 0 states have call successors, (0), 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 05:09:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27852 states to 27852 states and 39075 transitions. [2023-11-29 05:09:47,148 INFO L78 Accepts]: Start accepts. Automaton has 27852 states and 39075 transitions. Word has length 105 [2023-11-29 05:09:47,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:47,148 INFO L495 AbstractCegarLoop]: Abstraction has 27852 states and 39075 transitions. [2023-11-29 05:09:47,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 05:09:47,148 INFO L276 IsEmpty]: Start isEmpty. Operand 27852 states and 39075 transitions. [2023-11-29 05:09:47,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 05:09:47,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:47,150 INFO L195 NwaCegarLoop]: trace histogram [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 05:09:47,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 05:09:47,150 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:09:47,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:47,151 INFO L85 PathProgramCache]: Analyzing trace with hash 762966056, now seen corresponding path program 1 times [2023-11-29 05:09:47,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:47,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372170508] [2023-11-29 05:09:47,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:47,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:47,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:47,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372170508] [2023-11-29 05:09:47,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372170508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:47,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:47,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:09:47,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304362497] [2023-11-29 05:09:47,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:47,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:09:47,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:47,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:09:47,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:09:47,253 INFO L87 Difference]: Start difference. First operand 27852 states and 39075 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 05:09:47,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:47,672 INFO L93 Difference]: Finished difference Result 38736 states and 54581 transitions. [2023-11-29 05:09:47,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:09:47,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-11-29 05:09:47,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:47,685 INFO L225 Difference]: With dead ends: 38736 [2023-11-29 05:09:47,686 INFO L226 Difference]: Without dead ends: 16974 [2023-11-29 05:09:47,695 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 05:09:47,695 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 55 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:47,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3155 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:09:47,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16974 states. [2023-11-29 05:09:48,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16974 to 16972. [2023-11-29 05:09:48,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16972 states, 16970 states have (on average 1.3809664113140836) internal successors, (23435), 16971 states have internal predecessors, (23435), 0 states have call successors, (0), 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 05:09:48,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16972 states to 16972 states and 23435 transitions. [2023-11-29 05:09:48,234 INFO L78 Accepts]: Start accepts. Automaton has 16972 states and 23435 transitions. Word has length 107 [2023-11-29 05:09:48,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:48,234 INFO L495 AbstractCegarLoop]: Abstraction has 16972 states and 23435 transitions. [2023-11-29 05:09:48,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 05:09:48,234 INFO L276 IsEmpty]: Start isEmpty. Operand 16972 states and 23435 transitions. [2023-11-29 05:09:48,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 05:09:48,235 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:48,235 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:09:48,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 05:09:48,236 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:09:48,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:48,236 INFO L85 PathProgramCache]: Analyzing trace with hash -988820330, now seen corresponding path program 1 times [2023-11-29 05:09:48,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:48,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105367008] [2023-11-29 05:09:48,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:48,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:48,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:48,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105367008] [2023-11-29 05:09:48,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105367008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:48,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:48,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:09:48,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722078381] [2023-11-29 05:09:48,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:48,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:09:48,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:48,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:09:48,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:09:48,336 INFO L87 Difference]: Start difference. First operand 16972 states and 23435 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 05:09:48,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:48,619 INFO L93 Difference]: Finished difference Result 22416 states and 31121 transitions. [2023-11-29 05:09:48,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:09:48,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-11-29 05:09:48,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:48,629 INFO L225 Difference]: With dead ends: 22416 [2023-11-29 05:09:48,629 INFO L226 Difference]: Without dead ends: 11534 [2023-11-29 05:09:48,635 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 05:09:48,635 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 52 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:48,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3140 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:09:48,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11534 states. [2023-11-29 05:09:48,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11534 to 11532. [2023-11-29 05:09:48,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11532 states, 11530 states have (on average 1.3601908065915005) internal successors, (15683), 11531 states have internal predecessors, (15683), 0 states have call successors, (0), 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 05:09:48,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11532 states to 11532 states and 15683 transitions. [2023-11-29 05:09:48,901 INFO L78 Accepts]: Start accepts. Automaton has 11532 states and 15683 transitions. Word has length 109 [2023-11-29 05:09:48,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:48,902 INFO L495 AbstractCegarLoop]: Abstraction has 11532 states and 15683 transitions. [2023-11-29 05:09:48,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 05:09:48,902 INFO L276 IsEmpty]: Start isEmpty. Operand 11532 states and 15683 transitions. [2023-11-29 05:09:48,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-29 05:09:48,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:48,904 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:09:48,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 05:09:48,904 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:09:48,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:48,904 INFO L85 PathProgramCache]: Analyzing trace with hash -64099708, now seen corresponding path program 1 times [2023-11-29 05:09:48,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:48,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619801419] [2023-11-29 05:09:48,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:48,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:48,991 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:48,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:48,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619801419] [2023-11-29 05:09:48,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619801419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:48,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:48,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:09:48,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186299334] [2023-11-29 05:09:48,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:48,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:09:48,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:48,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:09:48,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:09:48,993 INFO L87 Difference]: Start difference. First operand 11532 states and 15683 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 05:09:49,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:49,128 INFO L93 Difference]: Finished difference Result 14256 states and 19493 transitions. [2023-11-29 05:09:49,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:09:49,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-11-29 05:09:49,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:49,137 INFO L225 Difference]: With dead ends: 14256 [2023-11-29 05:09:49,138 INFO L226 Difference]: Without dead ends: 8814 [2023-11-29 05:09:49,142 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 05:09:49,142 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 49 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3125 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:49,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3125 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:09:49,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8814 states. [2023-11-29 05:09:49,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8814 to 8812. [2023-11-29 05:09:49,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8812 states, 8810 states have (on average 1.3440408626560727) internal successors, (11841), 8811 states have internal predecessors, (11841), 0 states have call successors, (0), 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 05:09:49,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8812 states to 8812 states and 11841 transitions. [2023-11-29 05:09:49,308 INFO L78 Accepts]: Start accepts. Automaton has 8812 states and 11841 transitions. Word has length 111 [2023-11-29 05:09:49,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:49,308 INFO L495 AbstractCegarLoop]: Abstraction has 8812 states and 11841 transitions. [2023-11-29 05:09:49,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 05:09:49,308 INFO L276 IsEmpty]: Start isEmpty. Operand 8812 states and 11841 transitions. [2023-11-29 05:09:49,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 05:09:49,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:49,309 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:09:49,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 05:09:49,310 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:09:49,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:49,310 INFO L85 PathProgramCache]: Analyzing trace with hash -219207182, now seen corresponding path program 1 times [2023-11-29 05:09:49,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:49,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725234257] [2023-11-29 05:09:49,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:49,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:49,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:49,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725234257] [2023-11-29 05:09:49,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725234257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:49,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:49,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:09:49,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798056381] [2023-11-29 05:09:49,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:49,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:09:49,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:49,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:09:49,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:09:49,380 INFO L87 Difference]: Start difference. First operand 8812 states and 11841 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 05:09:49,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:49,471 INFO L93 Difference]: Finished difference Result 10176 states and 13730 transitions. [2023-11-29 05:09:49,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:09:49,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-11-29 05:09:49,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:49,478 INFO L225 Difference]: With dead ends: 10176 [2023-11-29 05:09:49,478 INFO L226 Difference]: Without dead ends: 7454 [2023-11-29 05:09:49,481 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 05:09:49,482 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 46 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:49,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3110 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:09:49,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7454 states. [2023-11-29 05:09:49,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7454 to 7452. [2023-11-29 05:09:49,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7452 states, 7450 states have (on average 1.3338255033557047) internal successors, (9937), 7451 states have internal predecessors, (9937), 0 states have call successors, (0), 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 05:09:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7452 states to 7452 states and 9937 transitions. [2023-11-29 05:09:49,594 INFO L78 Accepts]: Start accepts. Automaton has 7452 states and 9937 transitions. Word has length 113 [2023-11-29 05:09:49,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:49,595 INFO L495 AbstractCegarLoop]: Abstraction has 7452 states and 9937 transitions. [2023-11-29 05:09:49,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 05:09:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 7452 states and 9937 transitions. [2023-11-29 05:09:49,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 05:09:49,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:49,596 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:09:49,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 05:09:49,596 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:09:49,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:49,596 INFO L85 PathProgramCache]: Analyzing trace with hash 722109530, now seen corresponding path program 1 times [2023-11-29 05:09:49,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:49,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791525800] [2023-11-29 05:09:49,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:49,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:49,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:49,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791525800] [2023-11-29 05:09:49,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791525800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:49,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:49,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:09:49,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085207687] [2023-11-29 05:09:49,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:49,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:09:49,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:49,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:09:49,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:09:49,846 INFO L87 Difference]: Start difference. First operand 7452 states and 9937 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 05:09:54,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:54,750 INFO L93 Difference]: Finished difference Result 20221 states and 26717 transitions. [2023-11-29 05:09:54,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:09:54,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 05:09:54,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:54,763 INFO L225 Difference]: With dead ends: 20221 [2023-11-29 05:09:54,763 INFO L226 Difference]: Without dead ends: 14211 [2023-11-29 05:09:54,768 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 05:09:54,768 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 2390 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4871 mSolverCounterSat, 689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 5560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 689 IncrementalHoareTripleChecker+Valid, 4871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:54,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2390 Valid, 405 Invalid, 5560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [689 Valid, 4871 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-29 05:09:54,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14211 states. [2023-11-29 05:09:54,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14211 to 14211. [2023-11-29 05:09:54,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14211 states, 14209 states have (on average 1.2984727989302556) internal successors, (18450), 14210 states have internal predecessors, (18450), 0 states have call successors, (0), 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 05:09:54,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14211 states to 14211 states and 18450 transitions. [2023-11-29 05:09:54,991 INFO L78 Accepts]: Start accepts. Automaton has 14211 states and 18450 transitions. Word has length 115 [2023-11-29 05:09:54,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:54,991 INFO L495 AbstractCegarLoop]: Abstraction has 14211 states and 18450 transitions. [2023-11-29 05:09:54,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 05:09:54,992 INFO L276 IsEmpty]: Start isEmpty. Operand 14211 states and 18450 transitions. [2023-11-29 05:09:54,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 05:09:54,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:54,993 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:09:54,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 05:09:54,993 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:09:54,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:54,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1232704800, now seen corresponding path program 1 times [2023-11-29 05:09:54,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:54,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152346440] [2023-11-29 05:09:54,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:54,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:55,877 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:09:55,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:55,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152346440] [2023-11-29 05:09:55,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152346440] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:09:55,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427777575] [2023-11-29 05:09:55,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:55,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:09:55,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:09:55,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:09:55,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:09:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:56,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:09:56,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:09:56,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:09:56,481 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:09:56,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427777575] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:09:56,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:09:56,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-11-29 05:09:56,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208933431] [2023-11-29 05:09:56,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:09:56,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 05:09:56,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:56,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 05:09:56,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:09:56,484 INFO L87 Difference]: Start difference. First operand 14211 states and 18450 transitions. Second operand has 17 states, 17 states have (on average 19.470588235294116) internal successors, (331), 17 states have internal predecessors, (331), 0 states have call successors, (0), 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 05:09:59,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:59,130 INFO L93 Difference]: Finished difference Result 25464 states and 33716 transitions. [2023-11-29 05:09:59,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 05:09:59,130 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 19.470588235294116) internal successors, (331), 17 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 05:09:59,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:59,148 INFO L225 Difference]: With dead ends: 25464 [2023-11-29 05:09:59,148 INFO L226 Difference]: Without dead ends: 24102 [2023-11-29 05:09:59,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=720, Invalid=3062, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 05:09:59,154 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 11190 mSDsluCounter, 5126 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11190 SdHoareTripleChecker+Valid, 6668 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:59,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11190 Valid, 6668 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:09:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24102 states. [2023-11-29 05:09:59,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24102 to 23714. [2023-11-29 05:09:59,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23714 states, 23712 states have (on average 1.3057523616734144) internal successors, (30962), 23713 states have internal predecessors, (30962), 0 states have call successors, (0), 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 05:09:59,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23714 states to 23714 states and 30962 transitions. [2023-11-29 05:09:59,729 INFO L78 Accepts]: Start accepts. Automaton has 23714 states and 30962 transitions. Word has length 115 [2023-11-29 05:09:59,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:59,729 INFO L495 AbstractCegarLoop]: Abstraction has 23714 states and 30962 transitions. [2023-11-29 05:09:59,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.470588235294116) internal successors, (331), 17 states have internal predecessors, (331), 0 states have call successors, (0), 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 05:09:59,729 INFO L276 IsEmpty]: Start isEmpty. Operand 23714 states and 30962 transitions. [2023-11-29 05:09:59,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 05:09:59,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:59,731 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:09:59,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:09:59,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:09:59,932 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:09:59,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:59,932 INFO L85 PathProgramCache]: Analyzing trace with hash 506650405, now seen corresponding path program 1 times [2023-11-29 05:09:59,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:59,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253671636] [2023-11-29 05:09:59,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:59,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:00,552 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:10:00,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:10:00,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253671636] [2023-11-29 05:10:00,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253671636] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:10:00,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066615532] [2023-11-29 05:10:00,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:00,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:00,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:10:00,554 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:10:00,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:10:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:00,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:10:00,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:01,250 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:10:01,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:10:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:10:02,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066615532] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:10:02,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:10:02,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 27 [2023-11-29 05:10:02,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126297960] [2023-11-29 05:10:02,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:10:02,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 05:10:02,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:10:02,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 05:10:02,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2023-11-29 05:10:02,292 INFO L87 Difference]: Start difference. First operand 23714 states and 30962 transitions. Second operand has 28 states, 28 states have (on average 11.285714285714286) internal successors, (316), 27 states have internal predecessors, (316), 0 states have call successors, (0), 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 05:10:05,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:10:05,105 INFO L93 Difference]: Finished difference Result 54060 states and 71340 transitions. [2023-11-29 05:10:05,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 05:10:05,106 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.285714285714286) internal successors, (316), 27 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-11-29 05:10:05,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:10:05,140 INFO L225 Difference]: With dead ends: 54060 [2023-11-29 05:10:05,141 INFO L226 Difference]: Without dead ends: 43315 [2023-11-29 05:10:05,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=926, Invalid=3904, Unknown=0, NotChecked=0, Total=4830 [2023-11-29 05:10:05,154 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 22527 mSDsluCounter, 7057 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22527 SdHoareTripleChecker+Valid, 8600 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:10:05,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22527 Valid, 8600 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:10:05,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43315 states. [2023-11-29 05:10:06,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43315 to 34925. [2023-11-29 05:10:06,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34925 states, 34923 states have (on average 1.301549122354895) internal successors, (45454), 34924 states have internal predecessors, (45454), 0 states have call successors, (0), 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 05:10:06,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34925 states to 34925 states and 45454 transitions. [2023-11-29 05:10:06,235 INFO L78 Accepts]: Start accepts. Automaton has 34925 states and 45454 transitions. Word has length 116 [2023-11-29 05:10:06,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:10:06,236 INFO L495 AbstractCegarLoop]: Abstraction has 34925 states and 45454 transitions. [2023-11-29 05:10:06,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.285714285714286) internal successors, (316), 27 states have internal predecessors, (316), 0 states have call successors, (0), 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 05:10:06,236 INFO L276 IsEmpty]: Start isEmpty. Operand 34925 states and 45454 transitions. [2023-11-29 05:10:06,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 05:10:06,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:10:06,238 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:10:06,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:10:06,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:06,438 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:10:06,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:06,439 INFO L85 PathProgramCache]: Analyzing trace with hash -708007309, now seen corresponding path program 1 times [2023-11-29 05:10:06,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:10:06,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4537630] [2023-11-29 05:10:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:06,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:10:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:06,854 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:10:06,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:10:06,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4537630] [2023-11-29 05:10:06,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4537630] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:10:06,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135129654] [2023-11-29 05:10:06,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:06,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:06,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:10:06,856 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:10:06,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:10:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:07,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:10:07,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:10:07,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:10:09,658 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:10:09,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135129654] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:10:09,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:10:09,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-11-29 05:10:09,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226661028] [2023-11-29 05:10:09,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:10:09,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 05:10:09,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:10:09,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 05:10:09,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-11-29 05:10:09,662 INFO L87 Difference]: Start difference. First operand 34925 states and 45454 transitions. Second operand has 27 states, 27 states have (on average 11.37037037037037) internal successors, (307), 27 states have internal predecessors, (307), 0 states have call successors, (0), 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 05:10:12,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:10:12,244 INFO L93 Difference]: Finished difference Result 76949 states and 99925 transitions. [2023-11-29 05:10:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:10:12,245 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 11.37037037037037) internal successors, (307), 27 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-11-29 05:10:12,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:10:12,290 INFO L225 Difference]: With dead ends: 76949 [2023-11-29 05:10:12,290 INFO L226 Difference]: Without dead ends: 55623 [2023-11-29 05:10:12,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=313, Invalid=1169, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 05:10:12,306 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 12114 mSDsluCounter, 9937 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12114 SdHoareTripleChecker+Valid, 11477 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:10:12,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12114 Valid, 11477 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:10:12,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55623 states. [2023-11-29 05:10:14,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55623 to 54515. [2023-11-29 05:10:14,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54515 states, 54513 states have (on average 1.2975803936675656) internal successors, (70735), 54514 states have internal predecessors, (70735), 0 states have call successors, (0), 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 05:10:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54515 states to 54515 states and 70735 transitions. [2023-11-29 05:10:14,812 INFO L78 Accepts]: Start accepts. Automaton has 54515 states and 70735 transitions. Word has length 116 [2023-11-29 05:10:14,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:10:14,812 INFO L495 AbstractCegarLoop]: Abstraction has 54515 states and 70735 transitions. [2023-11-29 05:10:14,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 11.37037037037037) internal successors, (307), 27 states have internal predecessors, (307), 0 states have call successors, (0), 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 05:10:14,813 INFO L276 IsEmpty]: Start isEmpty. Operand 54515 states and 70735 transitions. [2023-11-29 05:10:14,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 05:10:14,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:10:14,816 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:10:14,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:10:15,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:15,016 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:10:15,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:15,017 INFO L85 PathProgramCache]: Analyzing trace with hash -957380546, now seen corresponding path program 1 times [2023-11-29 05:10:15,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:10:15,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977233919] [2023-11-29 05:10:15,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:15,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:10:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:15,311 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:10:15,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:10:15,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977233919] [2023-11-29 05:10:15,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977233919] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:10:15,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372026495] [2023-11-29 05:10:15,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:15,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:15,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:10:15,313 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:10:15,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:10:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:15,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:10:15,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:10:15,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:10:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:10:17,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372026495] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:10:17,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:10:17,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-11-29 05:10:17,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891953169] [2023-11-29 05:10:17,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:10:17,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 05:10:17,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:10:17,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 05:10:17,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:10:17,027 INFO L87 Difference]: Start difference. First operand 54515 states and 70735 transitions. Second operand has 26 states, 26 states have (on average 12.26923076923077) internal successors, (319), 25 states have internal predecessors, (319), 0 states have call successors, (0), 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 05:10:25,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:10:25,810 INFO L93 Difference]: Finished difference Result 224345 states and 290783 transitions. [2023-11-29 05:10:25,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 05:10:25,811 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.26923076923077) internal successors, (319), 25 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2023-11-29 05:10:25,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:10:25,963 INFO L225 Difference]: With dead ends: 224345 [2023-11-29 05:10:25,964 INFO L226 Difference]: Without dead ends: 183235 [2023-11-29 05:10:25,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=656, Invalid=2536, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 05:10:25,995 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 17715 mSDsluCounter, 8634 mSDsCounter, 0 mSdLazyCounter, 1561 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17715 SdHoareTripleChecker+Valid, 10204 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:10:25,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17715 Valid, 10204 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1561 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:10:26,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183235 states. [2023-11-29 05:10:34,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183235 to 175819. [2023-11-29 05:10:35,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175819 states, 175817 states have (on average 1.2737505474442177) internal successors, (223947), 175818 states have internal predecessors, (223947), 0 states have call successors, (0), 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 05:10:35,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175819 states to 175819 states and 223947 transitions. [2023-11-29 05:10:35,237 INFO L78 Accepts]: Start accepts. Automaton has 175819 states and 223947 transitions. Word has length 117 [2023-11-29 05:10:35,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:10:35,238 INFO L495 AbstractCegarLoop]: Abstraction has 175819 states and 223947 transitions. [2023-11-29 05:10:35,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.26923076923077) internal successors, (319), 25 states have internal predecessors, (319), 0 states have call successors, (0), 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 05:10:35,238 INFO L276 IsEmpty]: Start isEmpty. Operand 175819 states and 223947 transitions. [2023-11-29 05:10:35,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 05:10:35,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:10:35,242 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:10:35,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:10:35,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:35,443 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:10:35,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:35,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1884907257, now seen corresponding path program 1 times [2023-11-29 05:10:35,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:10:35,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964459816] [2023-11-29 05:10:35,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:35,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:10:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:10:35,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:10:35,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964459816] [2023-11-29 05:10:35,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964459816] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:10:35,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282194840] [2023-11-29 05:10:35,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:35,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:35,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:10:35,987 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:10:35,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:10:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:36,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:10:36,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:37,089 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:10:37,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:10:38,626 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:10:38,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282194840] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:10:38,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:10:38,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-11-29 05:10:38,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087722011] [2023-11-29 05:10:38,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:10:38,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 05:10:38,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:10:38,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 05:10:38,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2023-11-29 05:10:38,629 INFO L87 Difference]: Start difference. First operand 175819 states and 223947 transitions. Second operand has 28 states, 28 states have (on average 11.75) internal successors, (329), 28 states have internal predecessors, (329), 0 states have call successors, (0), 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 05:10:54,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:10:54,145 INFO L93 Difference]: Finished difference Result 503076 states and 639302 transitions. [2023-11-29 05:10:54,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:10:54,146 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.75) internal successors, (329), 28 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-11-29 05:10:54,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:10:54,615 INFO L225 Difference]: With dead ends: 503076 [2023-11-29 05:10:54,615 INFO L226 Difference]: Without dead ends: 360306 [2023-11-29 05:10:54,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=428, Invalid=1378, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 05:10:54,716 INFO L413 NwaCegarLoop]: 1550 mSDtfsCounter, 9537 mSDsluCounter, 6637 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9537 SdHoareTripleChecker+Valid, 8187 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:10:54,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9537 Valid, 8187 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:10:55,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360306 states. [2023-11-29 05:11:11,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360306 to 341878. [2023-11-29 05:11:11,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341878 states, 341876 states have (on average 1.2598310498543333) internal successors, (430706), 341877 states have internal predecessors, (430706), 0 states have call successors, (0), 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 05:11:12,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341878 states to 341878 states and 430706 transitions. [2023-11-29 05:11:12,619 INFO L78 Accepts]: Start accepts. Automaton has 341878 states and 430706 transitions. Word has length 118 [2023-11-29 05:11:12,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:11:12,619 INFO L495 AbstractCegarLoop]: Abstraction has 341878 states and 430706 transitions. [2023-11-29 05:11:12,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.75) internal successors, (329), 28 states have internal predecessors, (329), 0 states have call successors, (0), 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 05:11:12,619 INFO L276 IsEmpty]: Start isEmpty. Operand 341878 states and 430706 transitions. [2023-11-29 05:11:12,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 05:11:12,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:11:12,624 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:11:12,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:11:12,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 05:11:12,825 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:11:12,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:11:12,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1449719422, now seen corresponding path program 1 times [2023-11-29 05:11:12,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:11:12,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769539185] [2023-11-29 05:11:12,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:12,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:11:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:11:13,188 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:11:13,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:11:13,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769539185] [2023-11-29 05:11:13,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769539185] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:11:13,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912126916] [2023-11-29 05:11:13,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:13,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:13,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:11:13,189 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:11:13,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:11:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:11:13,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:11:13,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:11:14,095 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:11:14,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:11:15,843 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:11:15,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912126916] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:11:15,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:11:15,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-11-29 05:11:15,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727311732] [2023-11-29 05:11:15,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:11:15,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 05:11:15,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:11:15,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 05:11:15,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-11-29 05:11:15,846 INFO L87 Difference]: Start difference. First operand 341878 states and 430706 transitions. Second operand has 28 states, 28 states have (on average 12.142857142857142) internal successors, (340), 28 states have internal predecessors, (340), 0 states have call successors, (0), 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 05:11:32,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:11:32,076 INFO L93 Difference]: Finished difference Result 639035 states and 802877 transitions. [2023-11-29 05:11:32,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:11:32,077 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 12.142857142857142) internal successors, (340), 28 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2023-11-29 05:11:32,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:11:32,581 INFO L225 Difference]: With dead ends: 639035 [2023-11-29 05:11:32,581 INFO L226 Difference]: Without dead ends: 362162 [2023-11-29 05:11:32,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 05:11:32,720 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 9612 mSDsluCounter, 8093 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9612 SdHoareTripleChecker+Valid, 9638 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:11:32,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9612 Valid, 9638 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:11:33,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362162 states. [2023-11-29 05:11:49,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362162 to 301206. [2023-11-29 05:11:49,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301206 states, 301204 states have (on average 1.243446302173942) internal successors, (374531), 301205 states have internal predecessors, (374531), 0 states have call successors, (0), 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 05:11:50,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301206 states to 301206 states and 374531 transitions. [2023-11-29 05:11:50,334 INFO L78 Accepts]: Start accepts. Automaton has 301206 states and 374531 transitions. Word has length 119 [2023-11-29 05:11:50,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:11:50,334 INFO L495 AbstractCegarLoop]: Abstraction has 301206 states and 374531 transitions. [2023-11-29 05:11:50,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.142857142857142) internal successors, (340), 28 states have internal predecessors, (340), 0 states have call successors, (0), 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 05:11:50,334 INFO L276 IsEmpty]: Start isEmpty. Operand 301206 states and 374531 transitions. [2023-11-29 05:11:50,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 05:11:50,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:11:50,340 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:11:50,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:11:50,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:50,541 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:11:50,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:11:50,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1888955017, now seen corresponding path program 1 times [2023-11-29 05:11:50,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:11:50,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423933991] [2023-11-29 05:11:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:50,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:11:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:11:50,780 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:11:50,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:11:50,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423933991] [2023-11-29 05:11:50,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423933991] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:11:50,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154270796] [2023-11-29 05:11:50,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:50,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:50,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:11:50,781 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:11:50,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:11:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:11:50,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 05:11:50,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:11:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:11:51,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:11:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:11:52,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154270796] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:11:52,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:11:52,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-11-29 05:11:52,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027347151] [2023-11-29 05:11:52,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:11:52,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 05:11:52,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:11:52,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 05:11:52,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-11-29 05:11:52,563 INFO L87 Difference]: Start difference. First operand 301206 states and 374531 transitions. Second operand has 23 states, 23 states have (on average 12.130434782608695) internal successors, (279), 22 states have internal predecessors, (279), 0 states have call successors, (0), 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 05:12:21,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:12:21,668 INFO L93 Difference]: Finished difference Result 873710 states and 1086719 transitions. [2023-11-29 05:12:21,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 05:12:21,668 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.130434782608695) internal successors, (279), 22 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-11-29 05:12:21,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:12:22,458 INFO L225 Difference]: With dead ends: 873710 [2023-11-29 05:12:22,458 INFO L226 Difference]: Without dead ends: 614623 [2023-11-29 05:12:22,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 05:12:22,597 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 14308 mSDsluCounter, 5038 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14308 SdHoareTripleChecker+Valid, 6598 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:12:22,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14308 Valid, 6598 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:12:22,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614623 states. [2023-11-29 05:12:54,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614623 to 593883. [2023-11-29 05:12:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593883 states, 593881 states have (on average 1.2329507089804186) internal successors, (732226), 593882 states have internal predecessors, (732226), 0 states have call successors, (0), 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 05:12:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593883 states to 593883 states and 732226 transitions. [2023-11-29 05:12:56,242 INFO L78 Accepts]: Start accepts. Automaton has 593883 states and 732226 transitions. Word has length 120 [2023-11-29 05:12:56,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:12:56,242 INFO L495 AbstractCegarLoop]: Abstraction has 593883 states and 732226 transitions. [2023-11-29 05:12:56,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.130434782608695) internal successors, (279), 22 states have internal predecessors, (279), 0 states have call successors, (0), 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 05:12:56,242 INFO L276 IsEmpty]: Start isEmpty. Operand 593883 states and 732226 transitions. [2023-11-29 05:12:56,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 05:12:56,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:12:56,252 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:12:56,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:12:56,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:12:56,453 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:12:56,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:12:56,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2124037278, now seen corresponding path program 1 times [2023-11-29 05:12:56,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:12:56,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547039614] [2023-11-29 05:12:56,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:56,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:12:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:58,179 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:12:58,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:12:58,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547039614] [2023-11-29 05:12:58,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547039614] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:12:58,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473697340] [2023-11-29 05:12:58,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:58,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:12:58,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:12:58,181 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:12:58,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:12:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:58,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 05:12:58,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:12:59,665 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:12:59,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:13:00,979 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:13:00,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473697340] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:13:00,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:13:00,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 41 [2023-11-29 05:13:00,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955275346] [2023-11-29 05:13:00,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:13:00,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 05:13:00,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:00,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 05:13:00,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1508, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 05:13:00,981 INFO L87 Difference]: Start difference. First operand 593883 states and 732226 transitions. Second operand has 41 states, 41 states have (on average 7.902439024390244) internal successors, (324), 41 states have internal predecessors, (324), 0 states have call successors, (0), 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 05:15:23,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:15:23,468 INFO L93 Difference]: Finished difference Result 1927317 states and 2376212 transitions. [2023-11-29 05:15:23,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 360 states. [2023-11-29 05:15:23,469 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 7.902439024390244) internal successors, (324), 41 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2023-11-29 05:15:23,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:15:25,834 INFO L225 Difference]: With dead ends: 1927317 [2023-11-29 05:15:25,834 INFO L226 Difference]: Without dead ends: 1755291 [2023-11-29 05:15:26,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 396 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71802 ImplicationChecksByTransitivity, 49.7s TimeCoverageRelationStatistics Valid=20388, Invalid=137618, Unknown=0, NotChecked=0, Total=158006 [2023-11-29 05:15:26,448 INFO L413 NwaCegarLoop]: 1674 mSDtfsCounter, 29867 mSDsluCounter, 30776 mSDsCounter, 0 mSdLazyCounter, 6743 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29867 SdHoareTripleChecker+Valid, 32450 SdHoareTripleChecker+Invalid, 7112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 6743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:15:26,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29867 Valid, 32450 Invalid, 7112 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [369 Valid, 6743 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-11-29 05:15:27,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755291 states. [2023-11-29 05:16:19,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755291 to 739099. [2023-11-29 05:16:20,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739099 states, 739097 states have (on average 1.2348108570322975) internal successors, (912645), 739098 states have internal predecessors, (912645), 0 states have call successors, (0), 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 05:16:21,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739099 states to 739099 states and 912645 transitions. [2023-11-29 05:16:21,775 INFO L78 Accepts]: Start accepts. Automaton has 739099 states and 912645 transitions. Word has length 121 [2023-11-29 05:16:21,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:16:21,775 INFO L495 AbstractCegarLoop]: Abstraction has 739099 states and 912645 transitions. [2023-11-29 05:16:21,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 7.902439024390244) internal successors, (324), 41 states have internal predecessors, (324), 0 states have call successors, (0), 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 05:16:21,775 INFO L276 IsEmpty]: Start isEmpty. Operand 739099 states and 912645 transitions. [2023-11-29 05:16:21,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 05:16:21,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:16:21,783 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:16:21,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:16:21,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:16:21,984 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:16:21,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:16:21,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1319680538, now seen corresponding path program 1 times [2023-11-29 05:16:21,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:16:21,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491803133] [2023-11-29 05:16:21,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:16:21,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:16:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:22,983 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:16:22,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:16:22,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491803133] [2023-11-29 05:16:22,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491803133] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:16:22,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911651307] [2023-11-29 05:16:22,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:16:22,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:16:22,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:16:22,986 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:16:22,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:16:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:23,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 05:16:23,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:16:24,569 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:16:24,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:16:25,915 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:16:25,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911651307] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:16:25,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:16:25,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 15] total 35 [2023-11-29 05:16:25,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89227862] [2023-11-29 05:16:25,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:16:25,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 05:16:25,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:16:25,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 05:16:25,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1015, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 05:16:25,918 INFO L87 Difference]: Start difference. First operand 739099 states and 912645 transitions. Second operand has 35 states, 35 states have (on average 9.542857142857143) internal successors, (334), 35 states have internal predecessors, (334), 0 states have call successors, (0), 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 05:17:14,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:17:14,451 INFO L93 Difference]: Finished difference Result 1006133 states and 1232404 transitions. [2023-11-29 05:17:14,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 05:17:14,451 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 9.542857142857143) internal successors, (334), 35 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2023-11-29 05:17:14,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:17:15,492 INFO L225 Difference]: With dead ends: 1006133 [2023-11-29 05:17:15,492 INFO L226 Difference]: Without dead ends: 824925 [2023-11-29 05:17:15,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=740, Invalid=2566, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 05:17:15,634 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 11484 mSDsluCounter, 18698 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11484 SdHoareTripleChecker+Valid, 20239 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:17:15,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11484 Valid, 20239 Invalid, 1291 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:17:16,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824925 states. [2023-11-29 05:17:59,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824925 to 691299. [2023-11-29 05:18:00,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691299 states, 691297 states have (on average 1.2325686354779495) internal successors, (852071), 691298 states have internal predecessors, (852071), 0 states have call successors, (0), 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 05:18:01,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691299 states to 691299 states and 852071 transitions. [2023-11-29 05:18:01,880 INFO L78 Accepts]: Start accepts. Automaton has 691299 states and 852071 transitions. Word has length 121 [2023-11-29 05:18:01,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:18:01,880 INFO L495 AbstractCegarLoop]: Abstraction has 691299 states and 852071 transitions. [2023-11-29 05:18:01,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.542857142857143) internal successors, (334), 35 states have internal predecessors, (334), 0 states have call successors, (0), 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 05:18:01,881 INFO L276 IsEmpty]: Start isEmpty. Operand 691299 states and 852071 transitions. [2023-11-29 05:18:01,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 05:18:01,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:18:01,887 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 05:18:01,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:18:02,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 05:18:02,088 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:18:02,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:18:02,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1275642722, now seen corresponding path program 1 times [2023-11-29 05:18:02,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:18:02,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349068089] [2023-11-29 05:18:02,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:02,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:18:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:18:03,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:18:03,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349068089] [2023-11-29 05:18:03,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349068089] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:18:03,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704549887] [2023-11-29 05:18:03,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:18:03,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:18:03,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:18:03,036 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:18:03,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7d82af-7ed3-45ba-a3f5-a79e5e9c817e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:18:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:18:03,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 05:18:03,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:18:04,617 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:18:04,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:18:05,983 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:18:05,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704549887] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:18:05,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:18:05,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2023-11-29 05:18:05,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249809026] [2023-11-29 05:18:05,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:18:05,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 05:18:05,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:18:05,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 05:18:05,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2023-11-29 05:18:05,986 INFO L87 Difference]: Start difference. First operand 691299 states and 852071 transitions. Second operand has 32 states, 32 states have (on average 9.75) internal successors, (312), 32 states have internal predecessors, (312), 0 states have call successors, (0), 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 05:19:34,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:34,026 INFO L93 Difference]: Finished difference Result 1628840 states and 2011526 transitions. [2023-11-29 05:19:34,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 05:19:34,026 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.75) internal successors, (312), 32 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2023-11-29 05:19:34,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:35,862 INFO L225 Difference]: With dead ends: 1628840 [2023-11-29 05:19:35,862 INFO L226 Difference]: Without dead ends: 1443804 [2023-11-29 05:19:36,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=812, Invalid=3220, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 05:19:36,077 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 14896 mSDsluCounter, 14219 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14896 SdHoareTripleChecker+Valid, 15770 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:36,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14896 Valid, 15770 Invalid, 1223 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 05:19:36,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443804 states.