./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label02.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_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/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_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/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_3469b41f-aec9-4dcc-aa1d-f86927a67215/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 dfa3eba44a9bea88c5e5172bb0d59f15b4500aac9e1ca0a62eab29a7e65f8827 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:15:04,662 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:15:04,728 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:15:04,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:15:04,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:15:04,757 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:15:04,757 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:15:04,758 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:15:04,759 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:15:04,759 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:15:04,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:15:04,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:15:04,761 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:15:04,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:15:04,762 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:15:04,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:15:04,763 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:15:04,764 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:15:04,764 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:15:04,764 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:15:04,765 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:15:04,766 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:15:04,766 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:15:04,767 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:15:04,767 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:15:04,767 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:15:04,768 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:15:04,768 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:15:04,769 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:15:04,769 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:15:04,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:15:04,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:15:04,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:15:04,771 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:15:04,772 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:15:04,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:15:04,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:15:04,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:15:04,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:15:04,773 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:15:04,773 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:15:04,774 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:15:04,774 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_3469b41f-aec9-4dcc-aa1d-f86927a67215/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfa3eba44a9bea88c5e5172bb0d59f15b4500aac9e1ca0a62eab29a7e65f8827 [2023-11-29 02:15:04,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:15:04,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:15:04,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:15:04,993 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:15:04,993 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:15:04,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-11-29 02:15:07,726 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:15:08,162 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:15:08,162 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-11-29 02:15:08,193 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/data/15cdb39f1/c9471665fd294823b7b2552d21ee8069/FLAGc688afdfe [2023-11-29 02:15:08,207 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/data/15cdb39f1/c9471665fd294823b7b2552d21ee8069 [2023-11-29 02:15:08,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:15:08,212 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:15:08,213 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:15:08,213 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:15:08,218 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:15:08,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:15:08" (1/1) ... [2023-11-29 02:15:08,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c17d70c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:15:08, skipping insertion in model container [2023-11-29 02:15:08,221 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:15:08" (1/1) ... [2023-11-29 02:15:08,365 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:15:08,826 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_3469b41f-aec9-4dcc-aa1d-f86927a67215/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label02.c[26925,26938] [2023-11-29 02:15:08,882 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_3469b41f-aec9-4dcc-aa1d-f86927a67215/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label02.c[34215,34228] [2023-11-29 02:15:09,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:15:09,599 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:15:09,642 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_3469b41f-aec9-4dcc-aa1d-f86927a67215/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label02.c[26925,26938] [2023-11-29 02:15:09,655 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_3469b41f-aec9-4dcc-aa1d-f86927a67215/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label02.c[34215,34228] [2023-11-29 02:15:10,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:15:10,232 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:15:10,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:15:10 WrapperNode [2023-11-29 02:15:10,232 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:15:10,233 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:15:10,234 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:15:10,234 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:15:10,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:15:10" (1/1) ... [2023-11-29 02:15:10,291 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:15:10" (1/1) ... [2023-11-29 02:15:10,655 INFO L138 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5283 [2023-11-29 02:15:10,655 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:15:10,656 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:15:10,656 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:15:10,656 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:15:10,668 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:15:10" (1/1) ... [2023-11-29 02:15:10,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:15:10" (1/1) ... [2023-11-29 02:15:10,718 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:15:10" (1/1) ... [2023-11-29 02:15:10,875 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 02:15:10,875 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:15:10" (1/1) ... [2023-11-29 02:15:10,875 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:15:10" (1/1) ... [2023-11-29 02:15:11,033 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:15:10" (1/1) ... [2023-11-29 02:15:11,059 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:15:10" (1/1) ... [2023-11-29 02:15:11,077 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:15:10" (1/1) ... [2023-11-29 02:15:11,090 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:15:10" (1/1) ... [2023-11-29 02:15:11,169 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:15:11,170 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:15:11,170 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:15:11,171 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:15:11,171 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:15:10" (1/1) ... [2023-11-29 02:15:11,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:15:11,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:15:11,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:15:11,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:15:11,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:15:11,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:15:11,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:15:11,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:15:11,404 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:15:11,405 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:15:16,078 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:15:16,146 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:15:16,146 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 02:15:16,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:15:16 BoogieIcfgContainer [2023-11-29 02:15:16,148 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:15:16,150 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:15:16,150 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:15:16,154 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:15:16,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:15:08" (1/3) ... [2023-11-29 02:15:16,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c962ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:15:16, skipping insertion in model container [2023-11-29 02:15:16,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:15:10" (2/3) ... [2023-11-29 02:15:16,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c962ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:15:16, skipping insertion in model container [2023-11-29 02:15:16,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:15:16" (3/3) ... [2023-11-29 02:15:16,156 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-11-29 02:15:16,175 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:15:16,176 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 02:15:16,262 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:15:16,268 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;@72207bd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:15:16,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 02:15:16,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 884 states, 881 states have (on average 1.9693530079455164) internal successors, (1735), 883 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:16,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 02:15:16,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:16,285 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] [2023-11-29 02:15:16,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:16,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:16,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1451362732, now seen corresponding path program 1 times [2023-11-29 02:15:16,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:16,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494564327] [2023-11-29 02:15:16,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:16,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:16,559 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 02:15:16,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:16,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494564327] [2023-11-29 02:15:16,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494564327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:16,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:16,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:15:16,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159865975] [2023-11-29 02:15:16,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:16,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:15:16,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:16,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:15:16,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:15:16,594 INFO L87 Difference]: Start difference. First operand has 884 states, 881 states have (on average 1.9693530079455164) internal successors, (1735), 883 states have internal predecessors, (1735), 0 states have call successors, (0), 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 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:16,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:16,679 INFO L93 Difference]: Finished difference Result 1702 states and 3341 transitions. [2023-11-29 02:15:16,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:15:16,681 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-29 02:15:16,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:16,699 INFO L225 Difference]: With dead ends: 1702 [2023-11-29 02:15:16,699 INFO L226 Difference]: Without dead ends: 880 [2023-11-29 02:15:16,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:15:16,708 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:16,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1663 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:15:16,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2023-11-29 02:15:16,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2023-11-29 02:15:16,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 878 states have (on average 1.8952164009111618) internal successors, (1664), 879 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:16,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1664 transitions. [2023-11-29 02:15:16,780 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1664 transitions. Word has length 27 [2023-11-29 02:15:16,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:16,781 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 1664 transitions. [2023-11-29 02:15:16,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:16,781 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1664 transitions. [2023-11-29 02:15:16,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 02:15:16,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:16,783 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] [2023-11-29 02:15:16,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:15:16,783 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:16,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:16,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1038166230, now seen corresponding path program 1 times [2023-11-29 02:15:16,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:16,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127463764] [2023-11-29 02:15:16,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:16,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:17,009 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 02:15:17,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:17,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127463764] [2023-11-29 02:15:17,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127463764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:17,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:17,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:15:17,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839819428] [2023-11-29 02:15:17,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:17,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:15:17,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:17,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:15:17,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:15:17,020 INFO L87 Difference]: Start difference. First operand 880 states and 1664 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:17,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:17,141 INFO L93 Difference]: Finished difference Result 944 states and 1766 transitions. [2023-11-29 02:15:17,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:15:17,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-29 02:15:17,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:17,147 INFO L225 Difference]: With dead ends: 944 [2023-11-29 02:15:17,147 INFO L226 Difference]: Without dead ends: 880 [2023-11-29 02:15:17,148 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 02:15:17,149 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 0 mSDsluCounter, 3257 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4918 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:17,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4918 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:15:17,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2023-11-29 02:15:17,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2023-11-29 02:15:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 878 states have (on average 1.825740318906606) internal successors, (1603), 879 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:17,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1603 transitions. [2023-11-29 02:15:17,174 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1603 transitions. Word has length 27 [2023-11-29 02:15:17,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:17,174 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 1603 transitions. [2023-11-29 02:15:17,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:17,175 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1603 transitions. [2023-11-29 02:15:17,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 02:15:17,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:17,177 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] [2023-11-29 02:15:17,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:15:17,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:17,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:17,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1852062853, now seen corresponding path program 1 times [2023-11-29 02:15:17,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:17,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103862628] [2023-11-29 02:15:17,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:17,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:17,329 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 02:15:17,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:17,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103862628] [2023-11-29 02:15:17,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103862628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:17,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:17,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:15:17,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398867842] [2023-11-29 02:15:17,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:17,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:15:17,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:17,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:15:17,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:15:17,333 INFO L87 Difference]: Start difference. First operand 880 states and 1603 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:20,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:20,925 INFO L93 Difference]: Finished difference Result 2384 states and 4476 transitions. [2023-11-29 02:15:20,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:15:20,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-29 02:15:20,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:20,936 INFO L225 Difference]: With dead ends: 2384 [2023-11-29 02:15:20,936 INFO L226 Difference]: Without dead ends: 1631 [2023-11-29 02:15:20,938 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 02:15:20,939 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 903 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:20,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 636 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 02:15:20,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2023-11-29 02:15:20,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2023-11-29 02:15:20,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.5850214855739717) internal successors, (2582), 1630 states have internal predecessors, (2582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:20,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2582 transitions. [2023-11-29 02:15:20,975 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2582 transitions. Word has length 62 [2023-11-29 02:15:20,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:20,976 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2582 transitions. [2023-11-29 02:15:20,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:20,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2582 transitions. [2023-11-29 02:15:20,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 02:15:20,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:20,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:20,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:15:20,980 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:20,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:20,981 INFO L85 PathProgramCache]: Analyzing trace with hash 64150534, now seen corresponding path program 1 times [2023-11-29 02:15:20,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:20,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609275446] [2023-11-29 02:15:20,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:20,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:21,295 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 02:15:21,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:21,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609275446] [2023-11-29 02:15:21,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609275446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:21,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:21,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:15:21,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272795173] [2023-11-29 02:15:21,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:21,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:15:21,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:21,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:15:21,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:15:21,299 INFO L87 Difference]: Start difference. First operand 1631 states and 2582 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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 02:15:21,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:21,907 INFO L93 Difference]: Finished difference Result 2607 states and 4166 transitions. [2023-11-29 02:15:21,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 02:15:21,908 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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 87 [2023-11-29 02:15:21,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:21,920 INFO L225 Difference]: With dead ends: 2607 [2023-11-29 02:15:21,921 INFO L226 Difference]: Without dead ends: 2546 [2023-11-29 02:15:21,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-11-29 02:15:21,923 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 13544 mSDsluCounter, 3889 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13544 SdHoareTripleChecker+Valid, 5483 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:21,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13544 Valid, 5483 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:15:21,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2023-11-29 02:15:21,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 1690. [2023-11-29 02:15:21,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1688 states have (on average 1.5864928909952607) internal successors, (2678), 1689 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:21,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2678 transitions. [2023-11-29 02:15:21,967 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2678 transitions. Word has length 87 [2023-11-29 02:15:21,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:21,967 INFO L495 AbstractCegarLoop]: Abstraction has 1690 states and 2678 transitions. [2023-11-29 02:15:21,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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 02:15:21,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2678 transitions. [2023-11-29 02:15:21,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 02:15:21,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:21,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:21,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:15:21,971 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:21,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:21,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1377992502, now seen corresponding path program 1 times [2023-11-29 02:15:21,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:21,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246861644] [2023-11-29 02:15:21,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:21,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:22,120 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 02:15:22,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:22,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246861644] [2023-11-29 02:15:22,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246861644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:22,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:22,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:15:22,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730750590] [2023-11-29 02:15:22,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:22,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:15:22,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:22,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:15:22,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:15:22,123 INFO L87 Difference]: Start difference. First operand 1690 states and 2678 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 02:15:22,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:22,180 INFO L93 Difference]: Finished difference Result 1919 states and 3049 transitions. [2023-11-29 02:15:22,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:15:22,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 89 [2023-11-29 02:15:22,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:22,191 INFO L225 Difference]: With dead ends: 1919 [2023-11-29 02:15:22,191 INFO L226 Difference]: Without dead ends: 1799 [2023-11-29 02:15:22,192 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 02:15:22,193 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 1506 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1687 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 02:15:22,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1687 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:15:22,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2023-11-29 02:15:22,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1795. [2023-11-29 02:15:22,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1793 states have (on average 1.5872838817624093) internal successors, (2846), 1794 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:22,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2846 transitions. [2023-11-29 02:15:22,246 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2846 transitions. Word has length 89 [2023-11-29 02:15:22,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:22,247 INFO L495 AbstractCegarLoop]: Abstraction has 1795 states and 2846 transitions. [2023-11-29 02:15:22,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 02:15:22,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2846 transitions. [2023-11-29 02:15:22,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 02:15:22,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:22,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:22,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:15:22,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:22,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:22,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1380137454, now seen corresponding path program 1 times [2023-11-29 02:15:22,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:22,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339639827] [2023-11-29 02:15:22,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:22,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:22,755 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 02:15:22,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:22,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339639827] [2023-11-29 02:15:22,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339639827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:22,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:22,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:15:22,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822022166] [2023-11-29 02:15:22,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:22,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:15:22,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:22,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:15:22,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:15:22,758 INFO L87 Difference]: Start difference. First operand 1795 states and 2846 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 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 02:15:23,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:23,278 INFO L93 Difference]: Finished difference Result 2022 states and 3210 transitions. [2023-11-29 02:15:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:15:23,279 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 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 89 [2023-11-29 02:15:23,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:23,288 INFO L225 Difference]: With dead ends: 2022 [2023-11-29 02:15:23,288 INFO L226 Difference]: Without dead ends: 1797 [2023-11-29 02:15:23,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:15:23,290 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 7619 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7619 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:23,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7619 Valid, 2264 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:15:23,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2023-11-29 02:15:23,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1795. [2023-11-29 02:15:23,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1793 states have (on average 1.5861684327941996) internal successors, (2844), 1794 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:23,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2844 transitions. [2023-11-29 02:15:23,362 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2844 transitions. Word has length 89 [2023-11-29 02:15:23,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:23,362 INFO L495 AbstractCegarLoop]: Abstraction has 1795 states and 2844 transitions. [2023-11-29 02:15:23,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 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 02:15:23,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2844 transitions. [2023-11-29 02:15:23,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-29 02:15:23,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:23,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:23,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:15:23,365 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:23,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:23,365 INFO L85 PathProgramCache]: Analyzing trace with hash -294342910, now seen corresponding path program 1 times [2023-11-29 02:15:23,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:23,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960842889] [2023-11-29 02:15:23,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:23,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:23,584 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 02:15:23,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:23,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960842889] [2023-11-29 02:15:23,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960842889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:23,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:23,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:15:23,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900621220] [2023-11-29 02:15:23,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:23,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:15:23,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:23,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:15:23,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:15:23,587 INFO L87 Difference]: Start difference. First operand 1795 states and 2844 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:23,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:23,634 INFO L93 Difference]: Finished difference Result 1803 states and 2853 transitions. [2023-11-29 02:15:23,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:15:23,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-11-29 02:15:23,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:23,644 INFO L225 Difference]: With dead ends: 1803 [2023-11-29 02:15:23,644 INFO L226 Difference]: Without dead ends: 1801 [2023-11-29 02:15:23,645 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 02:15:23,646 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 1 mSDsluCounter, 3190 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4789 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 02:15:23,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4789 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:15:23,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2023-11-29 02:15:23,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1799. [2023-11-29 02:15:23,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1797 states have (on average 1.5843071786310519) internal successors, (2847), 1798 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:23,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 2847 transitions. [2023-11-29 02:15:23,681 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 2847 transitions. Word has length 90 [2023-11-29 02:15:23,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:23,682 INFO L495 AbstractCegarLoop]: Abstraction has 1799 states and 2847 transitions. [2023-11-29 02:15:23,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:23,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 2847 transitions. [2023-11-29 02:15:23,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 02:15:23,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:23,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:23,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:15:23,683 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:23,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:23,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1953030514, now seen corresponding path program 1 times [2023-11-29 02:15:23,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:23,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820387342] [2023-11-29 02:15:23,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:23,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:15:23,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:23,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820387342] [2023-11-29 02:15:23,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820387342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:23,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:23,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:15:23,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229741711] [2023-11-29 02:15:23,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:23,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:15:23,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:23,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:15:23,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:15:23,754 INFO L87 Difference]: Start difference. First operand 1799 states and 2847 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 02:15:23,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:23,797 INFO L93 Difference]: Finished difference Result 2241 states and 3547 transitions. [2023-11-29 02:15:23,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:15:23,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2023-11-29 02:15:23,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:23,808 INFO L225 Difference]: With dead ends: 2241 [2023-11-29 02:15:23,808 INFO L226 Difference]: Without dead ends: 2012 [2023-11-29 02:15:23,809 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 02:15:23,809 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 1525 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1778 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 02:15:23,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 1778 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:15:23,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2012 states. [2023-11-29 02:15:23,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2012 to 2010. [2023-11-29 02:15:23,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 2008 states have (on average 1.5826693227091633) internal successors, (3178), 2009 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:23,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3178 transitions. [2023-11-29 02:15:23,853 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3178 transitions. Word has length 91 [2023-11-29 02:15:23,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:23,854 INFO L495 AbstractCegarLoop]: Abstraction has 2010 states and 3178 transitions. [2023-11-29 02:15:23,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 02:15:23,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3178 transitions. [2023-11-29 02:15:23,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 02:15:23,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:23,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:23,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:15:23,855 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:23,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:23,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1197646450, now seen corresponding path program 1 times [2023-11-29 02:15:23,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:23,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586194196] [2023-11-29 02:15:23,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:23,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:23,927 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 02:15:23,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:23,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586194196] [2023-11-29 02:15:23,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586194196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:23,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:23,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:15:23,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246631090] [2023-11-29 02:15:23,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:23,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:15:23,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:23,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:15:23,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:15:23,930 INFO L87 Difference]: Start difference. First operand 2010 states and 3178 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 02:15:23,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:23,981 INFO L93 Difference]: Finished difference Result 2858 states and 4512 transitions. [2023-11-29 02:15:23,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:15:23,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2023-11-29 02:15:23,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:23,992 INFO L225 Difference]: With dead ends: 2858 [2023-11-29 02:15:23,992 INFO L226 Difference]: Without dead ends: 2418 [2023-11-29 02:15:23,993 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 02:15:23,994 INFO L413 NwaCegarLoop]: 1673 mSDtfsCounter, 1523 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 1780 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 02:15:23,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 1780 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:15:23,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2023-11-29 02:15:24,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 2416. [2023-11-29 02:15:24,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2416 states, 2414 states have (on average 1.5774647887323943) internal successors, (3808), 2415 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:24,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 3808 transitions. [2023-11-29 02:15:24,050 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 3808 transitions. Word has length 91 [2023-11-29 02:15:24,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:24,050 INFO L495 AbstractCegarLoop]: Abstraction has 2416 states and 3808 transitions. [2023-11-29 02:15:24,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 02:15:24,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 3808 transitions. [2023-11-29 02:15:24,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 02:15:24,052 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:24,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:24,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 02:15:24,052 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:24,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:24,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1876616306, now seen corresponding path program 1 times [2023-11-29 02:15:24,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:24,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484394663] [2023-11-29 02:15:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:24,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:24,122 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 02:15:24,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:24,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484394663] [2023-11-29 02:15:24,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484394663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:24,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:24,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:15:24,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385629332] [2023-11-29 02:15:24,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:24,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:15:24,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:24,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:15:24,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:15:24,124 INFO L87 Difference]: Start difference. First operand 2416 states and 3808 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 02:15:24,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:24,189 INFO L93 Difference]: Finished difference Result 4044 states and 6346 transitions. [2023-11-29 02:15:24,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:15:24,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2023-11-29 02:15:24,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:24,204 INFO L225 Difference]: With dead ends: 4044 [2023-11-29 02:15:24,204 INFO L226 Difference]: Without dead ends: 3198 [2023-11-29 02:15:24,205 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 02:15:24,206 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 1519 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 1776 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 02:15:24,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 1776 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:15:24,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2023-11-29 02:15:24,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 3196. [2023-11-29 02:15:24,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3196 states, 3194 states have (on average 1.5666875391358799) internal successors, (5004), 3195 states have internal predecessors, (5004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:24,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3196 states to 3196 states and 5004 transitions. [2023-11-29 02:15:24,313 INFO L78 Accepts]: Start accepts. Automaton has 3196 states and 5004 transitions. Word has length 91 [2023-11-29 02:15:24,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:24,313 INFO L495 AbstractCegarLoop]: Abstraction has 3196 states and 5004 transitions. [2023-11-29 02:15:24,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 02:15:24,313 INFO L276 IsEmpty]: Start isEmpty. Operand 3196 states and 5004 transitions. [2023-11-29 02:15:24,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 02:15:24,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:24,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:24,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 02:15:24,315 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:24,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:24,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1836672370, now seen corresponding path program 1 times [2023-11-29 02:15:24,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:24,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017032734] [2023-11-29 02:15:24,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:24,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:24,384 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 02:15:24,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:24,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017032734] [2023-11-29 02:15:24,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017032734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:24,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:24,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:15:24,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355610507] [2023-11-29 02:15:24,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:24,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:15:24,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:24,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:15:24,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:15:24,386 INFO L87 Difference]: Start difference. First operand 3196 states and 5004 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 02:15:24,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:24,479 INFO L93 Difference]: Finished difference Result 6320 states and 9822 transitions. [2023-11-29 02:15:24,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:15:24,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2023-11-29 02:15:24,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:24,500 INFO L225 Difference]: With dead ends: 6320 [2023-11-29 02:15:24,500 INFO L226 Difference]: Without dead ends: 4694 [2023-11-29 02:15:24,503 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 02:15:24,504 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 1517 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1778 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 02:15:24,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 1778 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:15:24,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2023-11-29 02:15:24,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4692. [2023-11-29 02:15:24,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4692 states, 4690 states have (on average 1.549680170575693) internal successors, (7268), 4691 states have internal predecessors, (7268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:24,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 7268 transitions. [2023-11-29 02:15:24,625 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 7268 transitions. Word has length 91 [2023-11-29 02:15:24,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:24,625 INFO L495 AbstractCegarLoop]: Abstraction has 4692 states and 7268 transitions. [2023-11-29 02:15:24,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 02:15:24,625 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 7268 transitions. [2023-11-29 02:15:24,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 02:15:24,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:24,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:24,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 02:15:24,626 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:24,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:24,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1573594994, now seen corresponding path program 1 times [2023-11-29 02:15:24,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:24,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911467973] [2023-11-29 02:15:24,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:24,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:24,693 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 02:15:24,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:24,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911467973] [2023-11-29 02:15:24,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911467973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:24,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:24,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:15:24,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365335047] [2023-11-29 02:15:24,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:24,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:15:24,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:24,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:15:24,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:15:24,695 INFO L87 Difference]: Start difference. First operand 4692 states and 7268 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 02:15:24,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:24,841 INFO L93 Difference]: Finished difference Result 10680 states and 16390 transitions. [2023-11-29 02:15:24,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:15:24,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2023-11-29 02:15:24,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:24,858 INFO L225 Difference]: With dead ends: 10680 [2023-11-29 02:15:24,858 INFO L226 Difference]: Without dead ends: 7558 [2023-11-29 02:15:24,863 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 02:15:24,864 INFO L413 NwaCegarLoop]: 1647 mSDtfsCounter, 1513 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1774 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 02:15:24,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1774 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:15:24,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7558 states. [2023-11-29 02:15:25,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7558 to 7556. [2023-11-29 02:15:25,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7556 states, 7554 states have (on average 1.5276674609478422) internal successors, (11540), 7555 states have internal predecessors, (11540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:25,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7556 states to 7556 states and 11540 transitions. [2023-11-29 02:15:25,126 INFO L78 Accepts]: Start accepts. Automaton has 7556 states and 11540 transitions. Word has length 91 [2023-11-29 02:15:25,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:25,127 INFO L495 AbstractCegarLoop]: Abstraction has 7556 states and 11540 transitions. [2023-11-29 02:15:25,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 02:15:25,127 INFO L276 IsEmpty]: Start isEmpty. Operand 7556 states and 11540 transitions. [2023-11-29 02:15:25,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 02:15:25,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:25,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:25,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 02:15:25,129 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:25,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:25,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1832638862, now seen corresponding path program 1 times [2023-11-29 02:15:25,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:25,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965799694] [2023-11-29 02:15:25,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:25,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:25,219 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 02:15:25,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:25,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965799694] [2023-11-29 02:15:25,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965799694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:25,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:25,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:15:25,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463642479] [2023-11-29 02:15:25,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:25,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:15:25,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:25,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:15:25,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:15:25,222 INFO L87 Difference]: Start difference. First operand 7556 states and 11540 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 02:15:25,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:25,625 INFO L93 Difference]: Finished difference Result 19016 states and 28758 transitions. [2023-11-29 02:15:25,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:15:25,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2023-11-29 02:15:25,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:25,654 INFO L225 Difference]: With dead ends: 19016 [2023-11-29 02:15:25,654 INFO L226 Difference]: Without dead ends: 13030 [2023-11-29 02:15:25,664 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 02:15:25,664 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 1515 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1780 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 02:15:25,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1780 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:15:25,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13030 states. [2023-11-29 02:15:26,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13030 to 13028. [2023-11-29 02:15:26,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13028 states, 13026 states have (on average 1.5025333947489636) internal successors, (19572), 13027 states have internal predecessors, (19572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:26,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13028 states to 13028 states and 19572 transitions. [2023-11-29 02:15:26,312 INFO L78 Accepts]: Start accepts. Automaton has 13028 states and 19572 transitions. Word has length 91 [2023-11-29 02:15:26,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:26,313 INFO L495 AbstractCegarLoop]: Abstraction has 13028 states and 19572 transitions. [2023-11-29 02:15:26,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 02:15:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 13028 states and 19572 transitions. [2023-11-29 02:15:26,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 02:15:26,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:26,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:26,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 02:15:26,315 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:26,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:26,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1608033138, now seen corresponding path program 1 times [2023-11-29 02:15:26,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:26,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985309900] [2023-11-29 02:15:26,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:26,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:26,410 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 02:15:26,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:26,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985309900] [2023-11-29 02:15:26,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985309900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:26,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:26,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:15:26,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779497411] [2023-11-29 02:15:26,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:26,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:15:26,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:26,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:15:26,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:15:26,412 INFO L87 Difference]: Start difference. First operand 13028 states and 19572 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 02:15:27,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:27,077 INFO L93 Difference]: Finished difference Result 34920 states and 51958 transitions. [2023-11-29 02:15:27,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:15:27,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2023-11-29 02:15:27,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:27,126 INFO L225 Difference]: With dead ends: 34920 [2023-11-29 02:15:27,126 INFO L226 Difference]: Without dead ends: 23462 [2023-11-29 02:15:27,141 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 02:15:27,142 INFO L413 NwaCegarLoop]: 1671 mSDtfsCounter, 1521 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1782 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 02:15:27,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 1782 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:15:27,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23462 states. [2023-11-29 02:15:28,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23462 to 23460. [2023-11-29 02:15:28,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23460 states, 23458 states have (on average 1.4754881064029328) internal successors, (34612), 23459 states have internal predecessors, (34612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:28,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23460 states to 23460 states and 34612 transitions. [2023-11-29 02:15:28,225 INFO L78 Accepts]: Start accepts. Automaton has 23460 states and 34612 transitions. Word has length 91 [2023-11-29 02:15:28,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:28,225 INFO L495 AbstractCegarLoop]: Abstraction has 23460 states and 34612 transitions. [2023-11-29 02:15:28,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 02:15:28,225 INFO L276 IsEmpty]: Start isEmpty. Operand 23460 states and 34612 transitions. [2023-11-29 02:15:28,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 02:15:28,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:28,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:28,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 02:15:28,227 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:28,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:28,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1270174003, now seen corresponding path program 1 times [2023-11-29 02:15:28,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:28,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110180508] [2023-11-29 02:15:28,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:28,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:28,319 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 02:15:28,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:28,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110180508] [2023-11-29 02:15:28,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110180508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:28,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:28,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:15:28,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391810058] [2023-11-29 02:15:28,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:28,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:15:28,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:28,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:15:28,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:15:28,321 INFO L87 Difference]: Start difference. First operand 23460 states and 34612 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 02:15:29,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:29,223 INFO L93 Difference]: Finished difference Result 45995 states and 68154 transitions. [2023-11-29 02:15:29,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:15:29,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2023-11-29 02:15:29,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:29,293 INFO L225 Difference]: With dead ends: 45995 [2023-11-29 02:15:29,293 INFO L226 Difference]: Without dead ends: 33960 [2023-11-29 02:15:29,312 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 02:15:29,313 INFO L413 NwaCegarLoop]: 1680 mSDtfsCounter, 1524 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1779 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 02:15:29,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1779 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:15:29,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33960 states. [2023-11-29 02:15:30,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33960 to 33958. [2023-11-29 02:15:30,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33958 states, 33956 states have (on average 1.4679585345741548) internal successors, (49846), 33957 states have internal predecessors, (49846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:30,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33958 states to 33958 states and 49846 transitions. [2023-11-29 02:15:30,912 INFO L78 Accepts]: Start accepts. Automaton has 33958 states and 49846 transitions. Word has length 93 [2023-11-29 02:15:30,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:30,913 INFO L495 AbstractCegarLoop]: Abstraction has 33958 states and 49846 transitions. [2023-11-29 02:15:30,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:30,913 INFO L276 IsEmpty]: Start isEmpty. Operand 33958 states and 49846 transitions. [2023-11-29 02:15:30,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 02:15:30,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:30,921 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:30,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 02:15:30,921 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:30,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:30,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1909067792, now seen corresponding path program 1 times [2023-11-29 02:15:30,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:30,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051349260] [2023-11-29 02:15:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:30,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:31,264 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 02:15:31,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:31,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051349260] [2023-11-29 02:15:31,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051349260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:31,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:31,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:15:31,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400212838] [2023-11-29 02:15:31,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:31,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:15:31,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:31,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:15:31,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:15:31,269 INFO L87 Difference]: Start difference. First operand 33958 states and 49846 transitions. Second operand has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:36,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:36,801 INFO L93 Difference]: Finished difference Result 299448 states and 437823 transitions. [2023-11-29 02:15:36,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:15:36,802 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 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 02:15:36,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:37,271 INFO L225 Difference]: With dead ends: 299448 [2023-11-29 02:15:37,272 INFO L226 Difference]: Without dead ends: 267062 [2023-11-29 02:15:37,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:15:37,336 INFO L413 NwaCegarLoop]: 1698 mSDtfsCounter, 11808 mSDsluCounter, 3264 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11808 SdHoareTripleChecker+Valid, 4962 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:37,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11808 Valid, 4962 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:15:37,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267062 states. [2023-11-29 02:15:40,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267062 to 66342. [2023-11-29 02:15:40,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66342 states, 66340 states have (on average 1.4594814591498342) internal successors, (96822), 66341 states have internal predecessors, (96822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:40,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66342 states to 66342 states and 96822 transitions. [2023-11-29 02:15:40,910 INFO L78 Accepts]: Start accepts. Automaton has 66342 states and 96822 transitions. Word has length 115 [2023-11-29 02:15:40,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:40,911 INFO L495 AbstractCegarLoop]: Abstraction has 66342 states and 96822 transitions. [2023-11-29 02:15:40,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:40,911 INFO L276 IsEmpty]: Start isEmpty. Operand 66342 states and 96822 transitions. [2023-11-29 02:15:40,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 02:15:40,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:40,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:40,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 02:15:40,920 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:40,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:40,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1630515440, now seen corresponding path program 1 times [2023-11-29 02:15:40,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:40,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785285465] [2023-11-29 02:15:40,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:40,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 02:15:41,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:41,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785285465] [2023-11-29 02:15:41,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785285465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:41,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:41,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:15:41,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883781342] [2023-11-29 02:15:41,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:41,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:15:41,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:41,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:15:41,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:15:41,246 INFO L87 Difference]: Start difference. First operand 66342 states and 96822 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:48,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:15:48,952 INFO L93 Difference]: Finished difference Result 331832 states and 484799 transitions. [2023-11-29 02:15:48,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:15:48,953 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 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 02:15:48,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:15:49,270 INFO L225 Difference]: With dead ends: 331832 [2023-11-29 02:15:49,270 INFO L226 Difference]: Without dead ends: 299446 [2023-11-29 02:15:49,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:15:49,317 INFO L413 NwaCegarLoop]: 1695 mSDtfsCounter, 11856 mSDsluCounter, 3074 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11856 SdHoareTripleChecker+Valid, 4769 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:15:49,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11856 Valid, 4769 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:15:49,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299446 states. [2023-11-29 02:15:54,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299446 to 114982. [2023-11-29 02:15:54,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114982 states, 114980 states have (on average 1.4521308053574535) internal successors, (166966), 114981 states have internal predecessors, (166966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:54,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114982 states to 114982 states and 166966 transitions. [2023-11-29 02:15:54,801 INFO L78 Accepts]: Start accepts. Automaton has 114982 states and 166966 transitions. Word has length 115 [2023-11-29 02:15:54,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:15:54,801 INFO L495 AbstractCegarLoop]: Abstraction has 114982 states and 166966 transitions. [2023-11-29 02:15:54,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:15:54,801 INFO L276 IsEmpty]: Start isEmpty. Operand 114982 states and 166966 transitions. [2023-11-29 02:15:54,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 02:15:54,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:15:54,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:15:54,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 02:15:54,812 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:15:54,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:15:54,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1985482000, now seen corresponding path program 1 times [2023-11-29 02:15:54,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:15:54,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121222001] [2023-11-29 02:15:54,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:15:54,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:15:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:15:55,089 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 02:15:55,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:15:55,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121222001] [2023-11-29 02:15:55,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121222001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:15:55,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:15:55,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:15:55,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175580405] [2023-11-29 02:15:55,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:15:55,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:15:55,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:15:55,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:15:55,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:15:55,092 INFO L87 Difference]: Start difference. First operand 114982 states and 166966 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:16:04,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:04,302 INFO L93 Difference]: Finished difference Result 364216 states and 531775 transitions. [2023-11-29 02:16:04,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:16:04,303 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 02:16:04,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:16:04,829 INFO L225 Difference]: With dead ends: 364216 [2023-11-29 02:16:04,829 INFO L226 Difference]: Without dead ends: 331830 [2023-11-29 02:16:04,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:16:04,875 INFO L413 NwaCegarLoop]: 1692 mSDtfsCounter, 11927 mSDsluCounter, 3075 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11927 SdHoareTripleChecker+Valid, 4767 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:16:04,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11927 Valid, 4767 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:16:05,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331830 states. [2023-11-29 02:16:10,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331830 to 147366. [2023-11-29 02:16:11,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147366 states, 147364 states have (on average 1.4517928394994708) internal successors, (213942), 147365 states have internal predecessors, (213942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:16:11,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147366 states to 147366 states and 213942 transitions. [2023-11-29 02:16:11,255 INFO L78 Accepts]: Start accepts. Automaton has 147366 states and 213942 transitions. Word has length 115 [2023-11-29 02:16:11,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:16:11,256 INFO L495 AbstractCegarLoop]: Abstraction has 147366 states and 213942 transitions. [2023-11-29 02:16:11,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:16:11,256 INFO L276 IsEmpty]: Start isEmpty. Operand 147366 states and 213942 transitions. [2023-11-29 02:16:11,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 02:16:11,265 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:16:11,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:11,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 02:16:11,266 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:16:11,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:11,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2025425936, now seen corresponding path program 1 times [2023-11-29 02:16:11,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:11,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158321629] [2023-11-29 02:16:11,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:11,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 02:16:11,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:11,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158321629] [2023-11-29 02:16:11,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158321629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:16:11,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:16:11,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:16:11,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376096184] [2023-11-29 02:16:11,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:16:11,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:16:11,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:11,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:16:11,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:16:11,571 INFO L87 Difference]: Start difference. First operand 147366 states and 213942 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:16:22,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:22,634 INFO L93 Difference]: Finished difference Result 396600 states and 578751 transitions. [2023-11-29 02:16:22,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:16:22,635 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 02:16:22,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:16:23,067 INFO L225 Difference]: With dead ends: 396600 [2023-11-29 02:16:23,067 INFO L226 Difference]: Without dead ends: 364214 [2023-11-29 02:16:23,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:16:23,111 INFO L413 NwaCegarLoop]: 1689 mSDtfsCounter, 12148 mSDsluCounter, 2987 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12148 SdHoareTripleChecker+Valid, 4676 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:16:23,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12148 Valid, 4676 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:16:23,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364214 states. [2023-11-29 02:16:30,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364214 to 179750. [2023-11-29 02:16:30,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179750 states, 179748 states have (on average 1.4515766517569042) internal successors, (260918), 179749 states have internal predecessors, (260918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:16:31,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179750 states to 179750 states and 260918 transitions. [2023-11-29 02:16:31,001 INFO L78 Accepts]: Start accepts. Automaton has 179750 states and 260918 transitions. Word has length 115 [2023-11-29 02:16:31,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:16:31,001 INFO L495 AbstractCegarLoop]: Abstraction has 179750 states and 260918 transitions. [2023-11-29 02:16:31,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:16:31,001 INFO L276 IsEmpty]: Start isEmpty. Operand 179750 states and 260918 transitions. [2023-11-29 02:16:31,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 02:16:31,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:16:31,009 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:31,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 02:16:31,009 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:16:31,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:31,009 INFO L85 PathProgramCache]: Analyzing trace with hash -2006463984, now seen corresponding path program 1 times [2023-11-29 02:16:31,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:31,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324476534] [2023-11-29 02:16:31,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:31,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,426 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 02:16:31,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:31,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324476534] [2023-11-29 02:16:31,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324476534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:16:31,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:16:31,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:16:31,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091575167] [2023-11-29 02:16:31,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:16:31,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:16:31,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:31,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:16:31,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:16:31,428 INFO L87 Difference]: Start difference. First operand 179750 states and 260918 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:16:43,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:43,659 INFO L93 Difference]: Finished difference Result 428984 states and 625727 transitions. [2023-11-29 02:16:43,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:16:43,660 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 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 02:16:43,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:16:44,194 INFO L225 Difference]: With dead ends: 428984 [2023-11-29 02:16:44,194 INFO L226 Difference]: Without dead ends: 396598 [2023-11-29 02:16:44,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:16:44,252 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 11989 mSDsluCounter, 3078 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11989 SdHoareTripleChecker+Valid, 4766 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:16:44,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11989 Valid, 4766 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:16:44,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396598 states. [2023-11-29 02:16:52,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396598 to 212134. [2023-11-29 02:16:53,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212134 states, 212132 states have (on average 1.4514264703109385) internal successors, (307894), 212133 states have internal predecessors, (307894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:16:53,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212134 states to 212134 states and 307894 transitions. [2023-11-29 02:16:53,554 INFO L78 Accepts]: Start accepts. Automaton has 212134 states and 307894 transitions. Word has length 115 [2023-11-29 02:16:53,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:16:53,555 INFO L495 AbstractCegarLoop]: Abstraction has 212134 states and 307894 transitions. [2023-11-29 02:16:53,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:16:53,555 INFO L276 IsEmpty]: Start isEmpty. Operand 212134 states and 307894 transitions. [2023-11-29 02:16:53,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 02:16:53,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:16:53,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:53,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 02:16:53,563 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:16:53,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:53,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1399769872, now seen corresponding path program 1 times [2023-11-29 02:16:53,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:53,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66415516] [2023-11-29 02:16:53,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:53,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 02:16:53,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:53,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66415516] [2023-11-29 02:16:53,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66415516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:16:53,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:16:53,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:16:53,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381478801] [2023-11-29 02:16:53,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:16:53,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:16:53,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:53,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:16:53,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:16:53,771 INFO L87 Difference]: Start difference. First operand 212134 states and 307894 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 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 02:17:07,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:07,911 INFO L93 Difference]: Finished difference Result 461368 states and 672703 transitions. [2023-11-29 02:17:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:17:07,912 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 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 115 [2023-11-29 02:17:07,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:08,644 INFO L225 Difference]: With dead ends: 461368 [2023-11-29 02:17:08,644 INFO L226 Difference]: Without dead ends: 428982 [2023-11-29 02:17:08,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:17:08,701 INFO L413 NwaCegarLoop]: 1694 mSDtfsCounter, 11763 mSDsluCounter, 3214 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11763 SdHoareTripleChecker+Valid, 4908 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:08,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11763 Valid, 4908 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:17:08,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428982 states. [2023-11-29 02:17:19,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428982 to 244518. [2023-11-29 02:17:19,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244518 states, 244516 states have (on average 1.4513160692960787) internal successors, (354870), 244517 states have internal predecessors, (354870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:17:20,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244518 states to 244518 states and 354870 transitions. [2023-11-29 02:17:20,240 INFO L78 Accepts]: Start accepts. Automaton has 244518 states and 354870 transitions. Word has length 115 [2023-11-29 02:17:20,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:20,240 INFO L495 AbstractCegarLoop]: Abstraction has 244518 states and 354870 transitions. [2023-11-29 02:17:20,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 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 02:17:20,241 INFO L276 IsEmpty]: Start isEmpty. Operand 244518 states and 354870 transitions. [2023-11-29 02:17:20,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 02:17:20,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:20,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:20,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 02:17:20,247 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:20,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:20,247 INFO L85 PathProgramCache]: Analyzing trace with hash -2040902128, now seen corresponding path program 1 times [2023-11-29 02:17:20,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:20,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276748934] [2023-11-29 02:17:20,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:20,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 02:17:20,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:20,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276748934] [2023-11-29 02:17:20,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276748934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:20,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:17:20,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:17:20,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44258760] [2023-11-29 02:17:20,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:20,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:17:20,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:20,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:17:20,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:17:20,449 INFO L87 Difference]: Start difference. First operand 244518 states and 354870 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:17:36,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:36,773 INFO L93 Difference]: Finished difference Result 493752 states and 719679 transitions. [2023-11-29 02:17:36,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:17:36,773 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 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 02:17:36,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:37,372 INFO L225 Difference]: With dead ends: 493752 [2023-11-29 02:17:37,372 INFO L226 Difference]: Without dead ends: 461366 [2023-11-29 02:17:37,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:17:37,450 INFO L413 NwaCegarLoop]: 1697 mSDtfsCounter, 11731 mSDsluCounter, 3436 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11731 SdHoareTripleChecker+Valid, 5133 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:17:37,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11731 Valid, 5133 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:17:37,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461366 states. [2023-11-29 02:17:49,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461366 to 276902. [2023-11-29 02:17:49,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276902 states, 276900 states have (on average 1.4512314915131816) internal successors, (401846), 276901 states have internal predecessors, (401846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:17:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276902 states to 276902 states and 401846 transitions. [2023-11-29 02:17:50,171 INFO L78 Accepts]: Start accepts. Automaton has 276902 states and 401846 transitions. Word has length 115 [2023-11-29 02:17:50,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:17:50,172 INFO L495 AbstractCegarLoop]: Abstraction has 276902 states and 401846 transitions. [2023-11-29 02:17:50,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:17:50,172 INFO L276 IsEmpty]: Start isEmpty. Operand 276902 states and 401846 transitions. [2023-11-29 02:17:50,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 02:17:50,181 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:17:50,181 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:17:50,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 02:17:50,181 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:17:50,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:17:50,182 INFO L85 PathProgramCache]: Analyzing trace with hash 524129144, now seen corresponding path program 1 times [2023-11-29 02:17:50,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:17:50,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734739918] [2023-11-29 02:17:50,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:17:50,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:17:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:17:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:17:50,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:17:50,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734739918] [2023-11-29 02:17:50,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734739918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:17:50,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:17:50,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:17:50,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969408466] [2023-11-29 02:17:50,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:17:50,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:17:50,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:17:50,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:17:50,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:17:50,312 INFO L87 Difference]: Start difference. First operand 276902 states and 401846 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:17:57,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:17:57,557 INFO L93 Difference]: Finished difference Result 468419 states and 682578 transitions. [2023-11-29 02:17:57,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:17:57,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 02:17:57,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:17:57,767 INFO L225 Difference]: With dead ends: 468419 [2023-11-29 02:17:57,767 INFO L226 Difference]: Without dead ends: 193089 [2023-11-29 02:17:57,829 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 02:17:57,830 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 74 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3250 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 02:17:57,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 3250 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:17:57,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193089 states. [2023-11-29 02:18:05,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193089 to 193087. [2023-11-29 02:18:05,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193087 states, 193085 states have (on average 1.4555195898179558) internal successors, (281039), 193086 states have internal predecessors, (281039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:05,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193087 states to 193087 states and 281039 transitions. [2023-11-29 02:18:05,810 INFO L78 Accepts]: Start accepts. Automaton has 193087 states and 281039 transitions. Word has length 117 [2023-11-29 02:18:05,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:05,810 INFO L495 AbstractCegarLoop]: Abstraction has 193087 states and 281039 transitions. [2023-11-29 02:18:05,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:05,810 INFO L276 IsEmpty]: Start isEmpty. Operand 193087 states and 281039 transitions. [2023-11-29 02:18:05,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 02:18:05,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:05,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:05,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 02:18:05,814 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:05,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:05,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1894902325, now seen corresponding path program 1 times [2023-11-29 02:18:05,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:05,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598984986] [2023-11-29 02:18:05,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:05,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:18:06,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:06,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598984986] [2023-11-29 02:18:06,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598984986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:06,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:06,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:18:06,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132266974] [2023-11-29 02:18:06,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:06,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:18:06,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:06,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:18:06,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:18:06,075 INFO L87 Difference]: Start difference. First operand 193087 states and 281039 transitions. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:19,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:19,519 INFO L93 Difference]: Finished difference Result 373329 states and 545240 transitions. [2023-11-29 02:18:19,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:18:19,519 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2023-11-29 02:18:19,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:19,926 INFO L225 Difference]: With dead ends: 373329 [2023-11-29 02:18:19,926 INFO L226 Difference]: Without dead ends: 350799 [2023-11-29 02:18:19,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:18:19,977 INFO L413 NwaCegarLoop]: 1687 mSDtfsCounter, 11824 mSDsluCounter, 3568 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11824 SdHoareTripleChecker+Valid, 5255 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:19,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11824 Valid, 5255 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:18:20,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350799 states. [2023-11-29 02:18:30,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350799 to 215615. [2023-11-29 02:18:30,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215615 states, 215613 states have (on average 1.455417808759212) internal successors, (313807), 215614 states have internal predecessors, (313807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:30,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215615 states to 215615 states and 313807 transitions. [2023-11-29 02:18:30,691 INFO L78 Accepts]: Start accepts. Automaton has 215615 states and 313807 transitions. Word has length 117 [2023-11-29 02:18:30,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:30,692 INFO L495 AbstractCegarLoop]: Abstraction has 215615 states and 313807 transitions. [2023-11-29 02:18:30,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:30,692 INFO L276 IsEmpty]: Start isEmpty. Operand 215615 states and 313807 transitions. [2023-11-29 02:18:30,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 02:18:30,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:30,697 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:30,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 02:18:30,697 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:30,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:30,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1706671498, now seen corresponding path program 1 times [2023-11-29 02:18:30,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:30,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761763090] [2023-11-29 02:18:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:30,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:30,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:30,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761763090] [2023-11-29 02:18:30,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761763090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:30,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:30,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:18:30,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474571793] [2023-11-29 02:18:30,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:30,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:18:30,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:30,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:18:30,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:18:30,831 INFO L87 Difference]: Start difference. First operand 215615 states and 313807 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:35,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:35,567 INFO L93 Difference]: Finished difference Result 322627 states and 469457 transitions. [2023-11-29 02:18:35,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:18:35,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 02:18:35,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:35,668 INFO L225 Difference]: With dead ends: 322627 [2023-11-29 02:18:35,669 INFO L226 Difference]: Without dead ends: 108609 [2023-11-29 02:18:35,704 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 02:18:35,705 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 69 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 3235 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 02:18:35,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 3235 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:18:35,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108609 states. [2023-11-29 02:18:40,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108609 to 108607. [2023-11-29 02:18:40,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108607 states, 108605 states have (on average 1.445080797385019) internal successors, (156943), 108606 states have internal predecessors, (156943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:40,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108607 states to 108607 states and 156943 transitions. [2023-11-29 02:18:40,561 INFO L78 Accepts]: Start accepts. Automaton has 108607 states and 156943 transitions. Word has length 118 [2023-11-29 02:18:40,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:40,562 INFO L495 AbstractCegarLoop]: Abstraction has 108607 states and 156943 transitions. [2023-11-29 02:18:40,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:40,562 INFO L276 IsEmpty]: Start isEmpty. Operand 108607 states and 156943 transitions. [2023-11-29 02:18:40,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 02:18:40,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:40,566 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:40,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 02:18:40,566 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:40,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:40,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1029902664, now seen corresponding path program 1 times [2023-11-29 02:18:40,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:40,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746200045] [2023-11-29 02:18:40,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:40,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:40,670 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:40,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:40,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746200045] [2023-11-29 02:18:40,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746200045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:40,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:40,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:18:40,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49014691] [2023-11-29 02:18:40,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:40,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:18:40,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:40,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:18:40,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:18:40,673 INFO L87 Difference]: Start difference. First operand 108607 states and 156943 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:42,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:42,958 INFO L93 Difference]: Finished difference Result 162115 states and 234161 transitions. [2023-11-29 02:18:42,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:18:42,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 02:18:42,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:43,002 INFO L225 Difference]: With dead ends: 162115 [2023-11-29 02:18:43,002 INFO L226 Difference]: Without dead ends: 55105 [2023-11-29 02:18:43,023 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 02:18:43,023 INFO L413 NwaCegarLoop]: 1650 mSDtfsCounter, 66 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 3220 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 02:18:43,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 3220 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:18:43,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55105 states. [2023-11-29 02:18:45,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55105 to 55103. [2023-11-29 02:18:45,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55103 states, 55101 states have (on average 1.4358904557086078) internal successors, (79119), 55102 states have internal predecessors, (79119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:45,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55103 states to 55103 states and 79119 transitions. [2023-11-29 02:18:45,294 INFO L78 Accepts]: Start accepts. Automaton has 55103 states and 79119 transitions. Word has length 120 [2023-11-29 02:18:45,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:45,294 INFO L495 AbstractCegarLoop]: Abstraction has 55103 states and 79119 transitions. [2023-11-29 02:18:45,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:45,294 INFO L276 IsEmpty]: Start isEmpty. Operand 55103 states and 79119 transitions. [2023-11-29 02:18:45,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:18:45,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:45,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:45,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 02:18:45,297 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:45,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:45,297 INFO L85 PathProgramCache]: Analyzing trace with hash -411668122, now seen corresponding path program 1 times [2023-11-29 02:18:45,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:45,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499343162] [2023-11-29 02:18:45,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:45,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:45,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:45,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499343162] [2023-11-29 02:18:45,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499343162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:45,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:45,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:18:45,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013626183] [2023-11-29 02:18:45,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:45,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:18:45,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:45,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:18:45,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:18:45,423 INFO L87 Difference]: Start difference. First operand 55103 states and 79119 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:46,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:46,730 INFO L93 Difference]: Finished difference Result 81859 states and 117425 transitions. [2023-11-29 02:18:46,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:18:46,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2023-11-29 02:18:46,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:46,753 INFO L225 Difference]: With dead ends: 81859 [2023-11-29 02:18:46,753 INFO L226 Difference]: Without dead ends: 28353 [2023-11-29 02:18:46,771 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 02:18:46,771 INFO L413 NwaCegarLoop]: 1643 mSDtfsCounter, 63 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 3205 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 02:18:46,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 3205 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:18:46,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28353 states. [2023-11-29 02:18:47,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28353 to 28351. [2023-11-29 02:18:47,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28351 states, 28349 states have (on average 1.4290098416169883) internal successors, (40511), 28350 states have internal predecessors, (40511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:47,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28351 states to 28351 states and 40511 transitions. [2023-11-29 02:18:47,961 INFO L78 Accepts]: Start accepts. Automaton has 28351 states and 40511 transitions. Word has length 122 [2023-11-29 02:18:47,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:47,961 INFO L495 AbstractCegarLoop]: Abstraction has 28351 states and 40511 transitions. [2023-11-29 02:18:47,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:47,961 INFO L276 IsEmpty]: Start isEmpty. Operand 28351 states and 40511 transitions. [2023-11-29 02:18:47,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 02:18:47,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:47,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:47,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 02:18:47,964 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:47,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:47,964 INFO L85 PathProgramCache]: Analyzing trace with hash -265476716, now seen corresponding path program 1 times [2023-11-29 02:18:47,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:47,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265882962] [2023-11-29 02:18:47,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:47,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:48,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:48,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265882962] [2023-11-29 02:18:48,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265882962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:48,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:48,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:18:48,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725365940] [2023-11-29 02:18:48,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:48,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:18:48,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:48,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:18:48,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:18:48,064 INFO L87 Difference]: Start difference. First operand 28351 states and 40511 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:48,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:48,597 INFO L93 Difference]: Finished difference Result 41731 states and 59513 transitions. [2023-11-29 02:18:48,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:18:48,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2023-11-29 02:18:48,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:48,610 INFO L225 Difference]: With dead ends: 41731 [2023-11-29 02:18:48,610 INFO L226 Difference]: Without dead ends: 14977 [2023-11-29 02:18:48,620 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 02:18:48,620 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 60 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3190 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 02:18:48,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 3190 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:18:48,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14977 states. [2023-11-29 02:18:49,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14977 to 14975. [2023-11-29 02:18:49,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14975 states, 14973 states have (on average 1.4265010351966874) internal successors, (21359), 14974 states have internal predecessors, (21359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:49,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14975 states to 14975 states and 21359 transitions. [2023-11-29 02:18:49,266 INFO L78 Accepts]: Start accepts. Automaton has 14975 states and 21359 transitions. Word has length 124 [2023-11-29 02:18:49,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:49,266 INFO L495 AbstractCegarLoop]: Abstraction has 14975 states and 21359 transitions. [2023-11-29 02:18:49,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:49,266 INFO L276 IsEmpty]: Start isEmpty. Operand 14975 states and 21359 transitions. [2023-11-29 02:18:49,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-29 02:18:49,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:49,268 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:49,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 02:18:49,268 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:49,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:49,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1497371838, now seen corresponding path program 1 times [2023-11-29 02:18:49,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:49,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425032311] [2023-11-29 02:18:49,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:49,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:49,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:49,372 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:49,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:49,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425032311] [2023-11-29 02:18:49,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425032311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:49,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:49,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:18:49,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117786972] [2023-11-29 02:18:49,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:49,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:18:49,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:49,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:18:49,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:18:49,374 INFO L87 Difference]: Start difference. First operand 14975 states and 21359 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:49,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:49,649 INFO L93 Difference]: Finished difference Result 21667 states and 30785 transitions. [2023-11-29 02:18:49,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:18:49,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2023-11-29 02:18:49,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:49,656 INFO L225 Difference]: With dead ends: 21667 [2023-11-29 02:18:49,656 INFO L226 Difference]: Without dead ends: 8289 [2023-11-29 02:18:49,661 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 02:18:49,661 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 57 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 3175 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 02:18:49,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 3175 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:18:49,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8289 states. [2023-11-29 02:18:49,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8289 to 8287. [2023-11-29 02:18:49,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8287 states, 8285 states have (on average 1.4313820156910078) internal successors, (11859), 8286 states have internal predecessors, (11859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8287 states to 8287 states and 11859 transitions. [2023-11-29 02:18:49,954 INFO L78 Accepts]: Start accepts. Automaton has 8287 states and 11859 transitions. Word has length 126 [2023-11-29 02:18:49,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:49,954 INFO L495 AbstractCegarLoop]: Abstraction has 8287 states and 11859 transitions. [2023-11-29 02:18:49,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:49,954 INFO L276 IsEmpty]: Start isEmpty. Operand 8287 states and 11859 transitions. [2023-11-29 02:18:49,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-29 02:18:49,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:49,956 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:49,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 02:18:49,956 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:49,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:49,956 INFO L85 PathProgramCache]: Analyzing trace with hash 826647152, now seen corresponding path program 1 times [2023-11-29 02:18:49,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:49,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033917614] [2023-11-29 02:18:49,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:49,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:50,050 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:50,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:50,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033917614] [2023-11-29 02:18:50,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033917614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:50,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:50,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:18:50,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966014228] [2023-11-29 02:18:50,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:50,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:18:50,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:50,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:18:50,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:18:50,052 INFO L87 Difference]: Start difference. First operand 8287 states and 11859 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:50,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:50,214 INFO L93 Difference]: Finished difference Result 11635 states and 16535 transitions. [2023-11-29 02:18:50,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:18:50,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2023-11-29 02:18:50,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:50,219 INFO L225 Difference]: With dead ends: 11635 [2023-11-29 02:18:50,219 INFO L226 Difference]: Without dead ends: 4945 [2023-11-29 02:18:50,222 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 02:18:50,223 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 54 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3160 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 02:18:50,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3160 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:18:50,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4945 states. [2023-11-29 02:18:50,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4945 to 4943. [2023-11-29 02:18:50,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4943 states, 4941 states have (on average 1.446468326249747) internal successors, (7147), 4942 states have internal predecessors, (7147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:50,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 7147 transitions. [2023-11-29 02:18:50,380 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 7147 transitions. Word has length 128 [2023-11-29 02:18:50,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:50,380 INFO L495 AbstractCegarLoop]: Abstraction has 4943 states and 7147 transitions. [2023-11-29 02:18:50,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:50,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 7147 transitions. [2023-11-29 02:18:50,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-29 02:18:50,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:50,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:50,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 02:18:50,382 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:50,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:50,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1072507678, now seen corresponding path program 1 times [2023-11-29 02:18:50,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:50,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910998947] [2023-11-29 02:18:50,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:50,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:50,472 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:50,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:50,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910998947] [2023-11-29 02:18:50,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910998947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:18:50,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:18:50,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:18:50,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439034181] [2023-11-29 02:18:50,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:18:50,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:18:50,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:50,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:18:50,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:18:50,474 INFO L87 Difference]: Start difference. First operand 4943 states and 7147 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:50,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:50,577 INFO L93 Difference]: Finished difference Result 6619 states and 9467 transitions. [2023-11-29 02:18:50,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:18:50,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2023-11-29 02:18:50,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:50,581 INFO L225 Difference]: With dead ends: 6619 [2023-11-29 02:18:50,581 INFO L226 Difference]: Without dead ends: 3273 [2023-11-29 02:18:50,583 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 02:18:50,584 INFO L413 NwaCegarLoop]: 1615 mSDtfsCounter, 51 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3145 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 02:18:50,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 3145 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:18:50,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2023-11-29 02:18:50,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 3271. [2023-11-29 02:18:50,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3271 states, 3269 states have (on average 1.4713979810339552) internal successors, (4810), 3270 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3271 states to 3271 states and 4810 transitions. [2023-11-29 02:18:50,707 INFO L78 Accepts]: Start accepts. Automaton has 3271 states and 4810 transitions. Word has length 130 [2023-11-29 02:18:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:50,707 INFO L495 AbstractCegarLoop]: Abstraction has 3271 states and 4810 transitions. [2023-11-29 02:18:50,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:50,707 INFO L276 IsEmpty]: Start isEmpty. Operand 3271 states and 4810 transitions. [2023-11-29 02:18:50,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 02:18:50,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:50,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:18:50,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 02:18:50,709 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:50,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:50,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1157798580, now seen corresponding path program 1 times [2023-11-29 02:18:50,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:50,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556288559] [2023-11-29 02:18:50,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:50,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:52,265 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:52,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:52,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556288559] [2023-11-29 02:18:52,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556288559] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:18:52,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255872802] [2023-11-29 02:18:52,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:52,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:18:52,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:18:52,268 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:18:52,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:18:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:52,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:18:52,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:18:52,685 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:18:52,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:18:52,938 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:18:52,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255872802] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:18:52,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:18:52,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-11-29 02:18:52,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536467263] [2023-11-29 02:18:52,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:18:52,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 02:18:52,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:18:52,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 02:18:52,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:18:52,941 INFO L87 Difference]: Start difference. First operand 3271 states and 4810 transitions. Second operand has 17 states, 17 states have (on average 22.470588235294116) internal successors, (382), 17 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:57,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:18:57,851 INFO L93 Difference]: Finished difference Result 15998 states and 21897 transitions. [2023-11-29 02:18:57,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-29 02:18:57,852 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 22.470588235294116) internal successors, (382), 17 states have internal predecessors, (382), 0 states have call successors, (0), 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 132 [2023-11-29 02:18:57,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:18:57,861 INFO L225 Difference]: With dead ends: 15998 [2023-11-29 02:18:57,861 INFO L226 Difference]: Without dead ends: 14324 [2023-11-29 02:18:57,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1583 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=926, Invalid=4044, Unknown=0, NotChecked=0, Total=4970 [2023-11-29 02:18:57,866 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 12647 mSDsluCounter, 5140 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12647 SdHoareTripleChecker+Valid, 6696 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:18:57,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12647 Valid, 6696 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 02:18:57,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14324 states. [2023-11-29 02:18:58,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14324 to 13776. [2023-11-29 02:18:58,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13776 states, 13774 states have (on average 1.3433280092928706) internal successors, (18503), 13775 states have internal predecessors, (18503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:58,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13776 states to 13776 states and 18503 transitions. [2023-11-29 02:18:58,491 INFO L78 Accepts]: Start accepts. Automaton has 13776 states and 18503 transitions. Word has length 132 [2023-11-29 02:18:58,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:18:58,491 INFO L495 AbstractCegarLoop]: Abstraction has 13776 states and 18503 transitions. [2023-11-29 02:18:58,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 22.470588235294116) internal successors, (382), 17 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:18:58,491 INFO L276 IsEmpty]: Start isEmpty. Operand 13776 states and 18503 transitions. [2023-11-29 02:18:58,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 02:18:58,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:18:58,493 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, 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 02:18:58,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:18:58,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 02:18:58,693 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:18:58,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:18:58,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2136142043, now seen corresponding path program 1 times [2023-11-29 02:18:58,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:18:58,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553898433] [2023-11-29 02:18:58,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:58,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:18:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:59,633 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:18:59,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:18:59,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553898433] [2023-11-29 02:18:59,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553898433] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:18:59,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981474869] [2023-11-29 02:18:59,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:18:59,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:18:59,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:18:59,635 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:18:59,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:18:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:18:59,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 02:18:59,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:19:00,751 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:19:00,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:19:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:19:02,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981474869] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:19:02,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:19:02,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-11-29 02:19:02,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651857879] [2023-11-29 02:19:02,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:19:02,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 02:19:02,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:19:02,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 02:19:02,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 02:19:02,567 INFO L87 Difference]: Start difference. First operand 13776 states and 18503 transitions. Second operand has 34 states, 34 states have (on average 10.911764705882353) internal successors, (371), 34 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:08,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:19:08,909 INFO L93 Difference]: Finished difference Result 74498 states and 98530 transitions. [2023-11-29 02:19:08,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-29 02:19:08,910 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 10.911764705882353) internal successors, (371), 34 states have internal predecessors, (371), 0 states have call successors, (0), 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 133 [2023-11-29 02:19:08,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:19:08,958 INFO L225 Difference]: With dead ends: 74498 [2023-11-29 02:19:08,958 INFO L226 Difference]: Without dead ends: 62557 [2023-11-29 02:19:08,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2246 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1531, Invalid=7025, Unknown=0, NotChecked=0, Total=8556 [2023-11-29 02:19:08,975 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 20197 mSDsluCounter, 10568 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20197 SdHoareTripleChecker+Valid, 12138 SdHoareTripleChecker+Invalid, 2424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:19:08,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20197 Valid, 12138 Invalid, 2424 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 2372 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 02:19:09,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62557 states. [2023-11-29 02:19:11,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62557 to 58185. [2023-11-29 02:19:11,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58185 states, 58183 states have (on average 1.3171201209975423) internal successors, (76634), 58184 states have internal predecessors, (76634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:11,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58185 states to 58185 states and 76634 transitions. [2023-11-29 02:19:11,645 INFO L78 Accepts]: Start accepts. Automaton has 58185 states and 76634 transitions. Word has length 133 [2023-11-29 02:19:11,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:19:11,645 INFO L495 AbstractCegarLoop]: Abstraction has 58185 states and 76634 transitions. [2023-11-29 02:19:11,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.911764705882353) internal successors, (371), 34 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:11,645 INFO L276 IsEmpty]: Start isEmpty. Operand 58185 states and 76634 transitions. [2023-11-29 02:19:11,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 02:19:11,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:19:11,648 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:19:11,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:19:11,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 02:19:11,849 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:19:11,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:19:11,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1541663703, now seen corresponding path program 1 times [2023-11-29 02:19:11,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:19:11,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608581731] [2023-11-29 02:19:11,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:11,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:19:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:14,013 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:19:14,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:19:14,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608581731] [2023-11-29 02:19:14,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608581731] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:19:14,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768477384] [2023-11-29 02:19:14,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:14,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:19:14,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:19:14,014 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:19:14,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:19:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:14,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 02:19:14,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:19:15,187 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:19:15,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:19:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:19:16,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768477384] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:19:16,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:19:16,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-11-29 02:19:16,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212565372] [2023-11-29 02:19:16,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:19:16,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 02:19:16,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:19:16,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 02:19:16,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=918, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 02:19:16,766 INFO L87 Difference]: Start difference. First operand 58185 states and 76634 transitions. Second operand has 33 states, 33 states have (on average 11.212121212121213) internal successors, (370), 33 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:27,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:19:27,504 INFO L93 Difference]: Finished difference Result 191979 states and 249944 transitions. [2023-11-29 02:19:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-29 02:19:27,505 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 11.212121212121213) internal successors, (370), 33 states have internal predecessors, (370), 0 states have call successors, (0), 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 133 [2023-11-29 02:19:27,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:19:27,633 INFO L225 Difference]: With dead ends: 191979 [2023-11-29 02:19:27,633 INFO L226 Difference]: Without dead ends: 136587 [2023-11-29 02:19:27,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1808 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1374, Invalid=5936, Unknown=0, NotChecked=0, Total=7310 [2023-11-29 02:19:27,659 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 22159 mSDsluCounter, 8758 mSDsCounter, 0 mSdLazyCounter, 1641 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22159 SdHoareTripleChecker+Valid, 10322 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:19:27,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22159 Valid, 10322 Invalid, 1691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 02:19:27,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136587 states. [2023-11-29 02:19:33,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136587 to 118699. [2023-11-29 02:19:33,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118699 states, 118697 states have (on average 1.2973706159380607) internal successors, (153994), 118698 states have internal predecessors, (153994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:33,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118699 states to 118699 states and 153994 transitions. [2023-11-29 02:19:33,756 INFO L78 Accepts]: Start accepts. Automaton has 118699 states and 153994 transitions. Word has length 133 [2023-11-29 02:19:33,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:19:33,757 INFO L495 AbstractCegarLoop]: Abstraction has 118699 states and 153994 transitions. [2023-11-29 02:19:33,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 11.212121212121213) internal successors, (370), 33 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:19:33,757 INFO L276 IsEmpty]: Start isEmpty. Operand 118699 states and 153994 transitions. [2023-11-29 02:19:33,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 02:19:33,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:19:33,761 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:19:33,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:19:33,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 02:19:33,961 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:19:33,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:19:33,962 INFO L85 PathProgramCache]: Analyzing trace with hash -753788035, now seen corresponding path program 1 times [2023-11-29 02:19:33,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:19:33,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342032788] [2023-11-29 02:19:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:33,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:19:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:34,744 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 02:19:34,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:19:34,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342032788] [2023-11-29 02:19:34,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342032788] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:19:34,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585163143] [2023-11-29 02:19:34,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:19:34,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:19:34,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:19:34,746 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:19:34,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:19:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:19:34,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 02:19:34,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:19:35,516 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 02:19:35,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:19:36,781 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 02:19:36,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585163143] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:19:36,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:19:36,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-11-29 02:19:36,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139445594] [2023-11-29 02:19:36,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:19:36,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 02:19:36,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:19:36,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 02:19:36,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2023-11-29 02:19:36,784 INFO L87 Difference]: Start difference. First operand 118699 states and 153994 transitions. Second operand has 29 states, 29 states have (on average 13.137931034482758) internal successors, (381), 28 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:20:00,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:20:00,058 INFO L93 Difference]: Finished difference Result 621797 states and 800970 transitions. [2023-11-29 02:20:00,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 02:20:00,058 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 13.137931034482758) internal successors, (381), 28 states have internal predecessors, (381), 0 states have call successors, (0), 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 135 [2023-11-29 02:20:00,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:20:00,724 INFO L225 Difference]: With dead ends: 621797 [2023-11-29 02:20:00,724 INFO L226 Difference]: Without dead ends: 510525 [2023-11-29 02:20:00,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=871, Invalid=3419, Unknown=0, NotChecked=0, Total=4290 [2023-11-29 02:20:00,800 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 24419 mSDsluCounter, 8676 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24419 SdHoareTripleChecker+Valid, 10243 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:20:00,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24419 Valid, 10243 Invalid, 1555 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 02:20:01,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510525 states. [2023-11-29 02:20:24,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510525 to 480273. [2023-11-29 02:20:24,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480273 states, 480271 states have (on average 1.2750363857072362) internal successors, (612363), 480272 states have internal predecessors, (612363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:20:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480273 states to 480273 states and 612363 transitions. [2023-11-29 02:20:25,598 INFO L78 Accepts]: Start accepts. Automaton has 480273 states and 612363 transitions. Word has length 135 [2023-11-29 02:20:25,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:20:25,598 INFO L495 AbstractCegarLoop]: Abstraction has 480273 states and 612363 transitions. [2023-11-29 02:20:25,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 13.137931034482758) internal successors, (381), 28 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:20:25,599 INFO L276 IsEmpty]: Start isEmpty. Operand 480273 states and 612363 transitions. [2023-11-29 02:20:25,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-29 02:20:25,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:20:25,607 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:20:25,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:20:25,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 02:20:25,808 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:20:25,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:20:25,808 INFO L85 PathProgramCache]: Analyzing trace with hash 784844910, now seen corresponding path program 1 times [2023-11-29 02:20:25,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:20:25,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668838660] [2023-11-29 02:20:25,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:25,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:20:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:26,984 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:20:26,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:20:26,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668838660] [2023-11-29 02:20:26,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668838660] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:20:26,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386799606] [2023-11-29 02:20:26,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:20:26,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:20:26,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:20:26,985 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:20:26,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3469b41f-aec9-4dcc-aa1d-f86927a67215/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:20:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:20:27,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 02:20:27,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:20:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:20:28,050 INFO L327 TraceCheckSpWp]: Computing backward predicates...