./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.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_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/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_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/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_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/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 1b5bedda6fafe9d5e27c46cd442327641e760ea4d9632bf3cdc5cb7e6cff3dd5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:45:03,962 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:45:04,038 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:45:04,043 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:45:04,044 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:45:04,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:45:04,078 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:45:04,079 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:45:04,080 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:45:04,080 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:45:04,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:45:04,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:45:04,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:45:04,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:45:04,083 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:45:04,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:45:04,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:45:04,085 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:45:04,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:45:04,086 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:45:04,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:45:04,087 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:45:04,087 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:45:04,088 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:45:04,088 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:45:04,089 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:45:04,089 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:45:04,090 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:45:04,090 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:45:04,090 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:45:04,091 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:45:04,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:45:04,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:45:04,092 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:45:04,092 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:45:04,092 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:45:04,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:45:04,092 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:45:04,093 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:45:04,093 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:45:04,093 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:45:04,093 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:45:04,093 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_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b5bedda6fafe9d5e27c46cd442327641e760ea4d9632bf3cdc5cb7e6cff3dd5 [2023-11-29 01:45:04,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:45:04,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:45:04,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:45:04,379 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:45:04,380 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:45:04,381 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c [2023-11-29 01:45:07,129 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:45:07,569 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:45:07,570 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c [2023-11-29 01:45:07,601 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/data/b6d64e5b2/84fa4a2ea14c4cba9c170f725be39dfe/FLAG1ba7c6af3 [2023-11-29 01:45:07,615 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/data/b6d64e5b2/84fa4a2ea14c4cba9c170f725be39dfe [2023-11-29 01:45:07,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:45:07,620 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:45:07,621 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:45:07,621 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:45:07,626 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:45:07,627 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:45:07" (1/1) ... [2023-11-29 01:45:07,628 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22986e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:45:07, skipping insertion in model container [2023-11-29 01:45:07,628 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:45:07" (1/1) ... [2023-11-29 01:45:07,785 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:45:08,137 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_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c[15482,15495] [2023-11-29 01:45:08,171 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_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c[18299,18312] [2023-11-29 01:45:08,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:45:08,821 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:45:08,854 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_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c[15482,15495] [2023-11-29 01:45:08,860 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_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c[18299,18312] [2023-11-29 01:45:09,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:45:09,332 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:45:09,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:45:09 WrapperNode [2023-11-29 01:45:09,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:45:09,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:45:09,333 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:45:09,333 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:45:09,341 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:45:09" (1/1) ... [2023-11-29 01:45:09,385 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:45:09" (1/1) ... [2023-11-29 01:45:09,665 INFO L138 Inliner]: procedures = 37, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5152 [2023-11-29 01:45:09,666 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:45:09,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:45:09,667 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:45:09,667 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:45:09,678 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:45:09" (1/1) ... [2023-11-29 01:45:09,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:45:09" (1/1) ... [2023-11-29 01:45:09,719 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:45:09" (1/1) ... [2023-11-29 01:45:09,904 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 01:45:09,905 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:45:09" (1/1) ... [2023-11-29 01:45:09,905 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:45:09" (1/1) ... [2023-11-29 01:45:10,112 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:45:09" (1/1) ... [2023-11-29 01:45:10,154 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:45:09" (1/1) ... [2023-11-29 01:45:10,210 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:45:09" (1/1) ... [2023-11-29 01:45:10,227 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:45:09" (1/1) ... [2023-11-29 01:45:10,270 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:45:10,271 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:45:10,271 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:45:10,271 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:45:10,272 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:45:09" (1/1) ... [2023-11-29 01:45:10,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:45:10,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:45:10,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:45:10,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:45:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:45:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:45:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:45:10,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:45:10,441 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:45:10,444 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:45:15,022 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:45:15,093 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:45:15,093 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 01:45:15,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:45:15 BoogieIcfgContainer [2023-11-29 01:45:15,094 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:45:15,097 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:45:15,097 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:45:15,100 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:45:15,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:45:07" (1/3) ... [2023-11-29 01:45:15,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aad597a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:45:15, skipping insertion in model container [2023-11-29 01:45:15,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:45:09" (2/3) ... [2023-11-29 01:45:15,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aad597a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:45:15, skipping insertion in model container [2023-11-29 01:45:15,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:45:15" (3/3) ... [2023-11-29 01:45:15,103 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label06.c [2023-11-29 01:45:15,122 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:45:15,122 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 01:45:15,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:45:15,237 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;@53f4d068, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:45:15,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 01:45:15,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:15,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 01:45:15,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:15,256 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] [2023-11-29 01:45:15,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:15,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:15,283 INFO L85 PathProgramCache]: Analyzing trace with hash -304709040, now seen corresponding path program 1 times [2023-11-29 01:45:15,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:15,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108949205] [2023-11-29 01:45:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:15,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:15,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:15,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:15,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108949205] [2023-11-29 01:45:15,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108949205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:15,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:15,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:45:15,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687803764] [2023-11-29 01:45:15,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:15,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:45:15,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:15,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:45:15,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:45:15,533 INFO L87 Difference]: Start difference. First operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:15,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:15,618 INFO L93 Difference]: Finished difference Result 1654 states and 3254 transitions. [2023-11-29 01:45:15,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:45:15,621 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-11-29 01:45:15,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:15,639 INFO L225 Difference]: With dead ends: 1654 [2023-11-29 01:45:15,639 INFO L226 Difference]: Without dead ends: 845 [2023-11-29 01:45:15,646 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 01:45:15,649 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:15,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1599 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:45:15,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-11-29 01:45:15,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-11-29 01:45:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.896797153024911) internal successors, (1599), 844 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:15,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1599 transitions. [2023-11-29 01:45:15,729 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1599 transitions. Word has length 23 [2023-11-29 01:45:15,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:15,729 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1599 transitions. [2023-11-29 01:45:15,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:15,730 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1599 transitions. [2023-11-29 01:45:15,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 01:45:15,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:15,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:45:15,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:45:15,732 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:15,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:15,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1993652782, now seen corresponding path program 1 times [2023-11-29 01:45:15,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:15,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091738340] [2023-11-29 01:45:15,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:15,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:16,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:16,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:16,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091738340] [2023-11-29 01:45:16,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091738340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:16,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:16,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:45:16,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677567422] [2023-11-29 01:45:16,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:16,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:45:16,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:16,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:45:16,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:45:16,066 INFO L87 Difference]: Start difference. First operand 845 states and 1599 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:16,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:16,165 INFO L93 Difference]: Finished difference Result 895 states and 1678 transitions. [2023-11-29 01:45:16,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:45:16,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-11-29 01:45:16,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:16,171 INFO L225 Difference]: With dead ends: 895 [2023-11-29 01:45:16,172 INFO L226 Difference]: Without dead ends: 845 [2023-11-29 01:45:16,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:45:16,174 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 0 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:16,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4744 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:45:16,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-11-29 01:45:16,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-11-29 01:45:16,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.849347568208778) internal successors, (1559), 844 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1559 transitions. [2023-11-29 01:45:16,202 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1559 transitions. Word has length 23 [2023-11-29 01:45:16,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:16,202 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1559 transitions. [2023-11-29 01:45:16,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:16,202 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1559 transitions. [2023-11-29 01:45:16,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 01:45:16,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:16,203 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] [2023-11-29 01:45:16,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:45:16,204 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:16,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:16,205 INFO L85 PathProgramCache]: Analyzing trace with hash 863507850, now seen corresponding path program 1 times [2023-11-29 01:45:16,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:16,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512518196] [2023-11-29 01:45:16,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:16,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:16,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:16,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512518196] [2023-11-29 01:45:16,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512518196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:16,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:16,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:45:16,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028012321] [2023-11-29 01:45:16,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:16,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:45:16,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:16,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:45:16,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:45:16,267 INFO L87 Difference]: Start difference. First operand 845 states and 1559 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:20,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:20,117 INFO L93 Difference]: Finished difference Result 2349 states and 4432 transitions. [2023-11-29 01:45:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:45:20,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-11-29 01:45:20,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:20,128 INFO L225 Difference]: With dead ends: 2349 [2023-11-29 01:45:20,129 INFO L226 Difference]: Without dead ends: 1596 [2023-11-29 01:45:20,130 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 01:45:20,132 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 966 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:20,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 232 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 01:45:20,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2023-11-29 01:45:20,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1596. [2023-11-29 01:45:20,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1594 states have (on average 1.8180677540777916) internal successors, (2898), 1595 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:20,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2898 transitions. [2023-11-29 01:45:20,186 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2898 transitions. Word has length 23 [2023-11-29 01:45:20,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:20,186 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 2898 transitions. [2023-11-29 01:45:20,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:20,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2898 transitions. [2023-11-29 01:45:20,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 01:45:20,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:20,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:45:20,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:45:20,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:20,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:20,191 INFO L85 PathProgramCache]: Analyzing trace with hash -399525676, now seen corresponding path program 1 times [2023-11-29 01:45:20,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:20,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248195589] [2023-11-29 01:45:20,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:20,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:20,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:20,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248195589] [2023-11-29 01:45:20,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248195589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:20,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:20,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:45:20,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055082448] [2023-11-29 01:45:20,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:20,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:45:20,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:20,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:45:20,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:45:20,399 INFO L87 Difference]: Start difference. First operand 1596 states and 2898 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:20,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:20,754 INFO L93 Difference]: Finished difference Result 2160 states and 3810 transitions. [2023-11-29 01:45:20,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:45:20,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 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 01:45:20,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:20,768 INFO L225 Difference]: With dead ends: 2160 [2023-11-29 01:45:20,769 INFO L226 Difference]: Without dead ends: 2113 [2023-11-29 01:45:20,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:45:20,771 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 9675 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9675 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:20,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9675 Valid, 3624 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:45:20,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2023-11-29 01:45:20,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 1641. [2023-11-29 01:45:20,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1639 states have (on average 1.8126906650396584) internal successors, (2971), 1640 states have internal predecessors, (2971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:20,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2971 transitions. [2023-11-29 01:45:20,825 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2971 transitions. Word has length 62 [2023-11-29 01:45:20,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:20,825 INFO L495 AbstractCegarLoop]: Abstraction has 1641 states and 2971 transitions. [2023-11-29 01:45:20,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:20,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2971 transitions. [2023-11-29 01:45:20,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 01:45:20,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:20,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:45:20,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:45:20,829 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:20,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:20,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1824916700, now seen corresponding path program 1 times [2023-11-29 01:45:20,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:20,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709161898] [2023-11-29 01:45:20,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:20,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:20,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:20,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709161898] [2023-11-29 01:45:20,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709161898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:20,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:20,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:45:20,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283496513] [2023-11-29 01:45:20,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:20,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:45:20,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:20,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:45:20,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:45:20,919 INFO L87 Difference]: Start difference. First operand 1641 states and 2971 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:20,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:20,960 INFO L93 Difference]: Finished difference Result 1814 states and 3250 transitions. [2023-11-29 01:45:20,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:45:20,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-11-29 01:45:20,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:20,971 INFO L225 Difference]: With dead ends: 1814 [2023-11-29 01:45:20,972 INFO L226 Difference]: Without dead ends: 1722 [2023-11-29 01:45:20,973 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 01:45:20,974 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 1488 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:20,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1624 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:45:20,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2023-11-29 01:45:21,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2023-11-29 01:45:21,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.8026775320139696) internal successors, (3097), 1719 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:21,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 3097 transitions. [2023-11-29 01:45:21,025 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 3097 transitions. Word has length 64 [2023-11-29 01:45:21,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:21,026 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 3097 transitions. [2023-11-29 01:45:21,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:21,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 3097 transitions. [2023-11-29 01:45:21,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 01:45:21,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:21,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:45:21,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:45:21,028 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:21,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:21,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1822771748, now seen corresponding path program 1 times [2023-11-29 01:45:21,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:21,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004595012] [2023-11-29 01:45:21,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:21,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:21,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:21,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:21,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004595012] [2023-11-29 01:45:21,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004595012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:21,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:21,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:45:21,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942159098] [2023-11-29 01:45:21,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:21,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:45:21,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:21,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:45:21,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:45:21,373 INFO L87 Difference]: Start difference. First operand 1720 states and 3097 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:21,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:21,662 INFO L93 Difference]: Finished difference Result 1893 states and 3373 transitions. [2023-11-29 01:45:21,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:45:21,663 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-11-29 01:45:21,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:21,673 INFO L225 Difference]: With dead ends: 1893 [2023-11-29 01:45:21,673 INFO L226 Difference]: Without dead ends: 1722 [2023-11-29 01:45:21,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:45:21,675 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 1530 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:21,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 1983 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:45:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2023-11-29 01:45:21,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2023-11-29 01:45:21,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.8015133876600697) internal successors, (3095), 1719 states have internal predecessors, (3095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:21,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 3095 transitions. [2023-11-29 01:45:21,726 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 3095 transitions. Word has length 64 [2023-11-29 01:45:21,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:21,726 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 3095 transitions. [2023-11-29 01:45:21,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:21,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 3095 transitions. [2023-11-29 01:45:21,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 01:45:21,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:21,728 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] [2023-11-29 01:45:21,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:45:21,728 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:21,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:21,729 INFO L85 PathProgramCache]: Analyzing trace with hash -800021079, now seen corresponding path program 1 times [2023-11-29 01:45:21,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:21,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063569002] [2023-11-29 01:45:21,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:21,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:21,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:21,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063569002] [2023-11-29 01:45:21,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063569002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:21,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:21,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:45:21,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305082937] [2023-11-29 01:45:21,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:21,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:45:21,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:21,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:45:21,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:45:21,959 INFO L87 Difference]: Start difference. First operand 1720 states and 3095 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:22,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:22,009 INFO L93 Difference]: Finished difference Result 1728 states and 3104 transitions. [2023-11-29 01:45:22,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:45:22,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-11-29 01:45:22,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:22,020 INFO L225 Difference]: With dead ends: 1728 [2023-11-29 01:45:22,020 INFO L226 Difference]: Without dead ends: 1726 [2023-11-29 01:45:22,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:45:22,022 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4657 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 01:45:22,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4657 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:45:22,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2023-11-29 01:45:22,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1724. [2023-11-29 01:45:22,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1722 states have (on average 1.7990708478513358) internal successors, (3098), 1723 states have internal predecessors, (3098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 3098 transitions. [2023-11-29 01:45:22,067 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 3098 transitions. Word has length 65 [2023-11-29 01:45:22,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:22,067 INFO L495 AbstractCegarLoop]: Abstraction has 1724 states and 3098 transitions. [2023-11-29 01:45:22,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:22,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 3098 transitions. [2023-11-29 01:45:22,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 01:45:22,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:22,068 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] [2023-11-29 01:45:22,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:45:22,069 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:22,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:22,069 INFO L85 PathProgramCache]: Analyzing trace with hash 306458780, now seen corresponding path program 1 times [2023-11-29 01:45:22,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:22,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105301841] [2023-11-29 01:45:22,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:22,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:22,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:22,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:22,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105301841] [2023-11-29 01:45:22,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105301841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:22,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:22,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:45:22,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62951451] [2023-11-29 01:45:22,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:22,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:45:22,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:22,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:45:22,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:45:22,137 INFO L87 Difference]: Start difference. First operand 1724 states and 3098 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:22,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:22,176 INFO L93 Difference]: Finished difference Result 1910 states and 3391 transitions. [2023-11-29 01:45:22,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:45:22,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-11-29 01:45:22,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:22,187 INFO L225 Difference]: With dead ends: 1910 [2023-11-29 01:45:22,187 INFO L226 Difference]: Without dead ends: 1814 [2023-11-29 01:45:22,188 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 01:45:22,188 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1504 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1692 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 01:45:22,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1692 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:45:22,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2023-11-29 01:45:22,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1812. [2023-11-29 01:45:22,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1810 states have (on average 1.787292817679558) internal successors, (3235), 1811 states have internal predecessors, (3235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:22,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 3235 transitions. [2023-11-29 01:45:22,244 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 3235 transitions. Word has length 66 [2023-11-29 01:45:22,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:22,244 INFO L495 AbstractCegarLoop]: Abstraction has 1812 states and 3235 transitions. [2023-11-29 01:45:22,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:22,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 3235 transitions. [2023-11-29 01:45:22,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 01:45:22,245 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:22,245 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] [2023-11-29 01:45:22,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:45:22,246 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:22,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:22,246 INFO L85 PathProgramCache]: Analyzing trace with hash -103927908, now seen corresponding path program 1 times [2023-11-29 01:45:22,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:22,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302249554] [2023-11-29 01:45:22,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:22,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:22,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:22,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302249554] [2023-11-29 01:45:22,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302249554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:22,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:22,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:45:22,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744855022] [2023-11-29 01:45:22,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:22,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:45:22,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:22,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:45:22,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:45:22,326 INFO L87 Difference]: Start difference. First operand 1812 states and 3235 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:22,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:22,368 INFO L93 Difference]: Finished difference Result 2310 states and 4015 transitions. [2023-11-29 01:45:22,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:45:22,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-11-29 01:45:22,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:22,381 INFO L225 Difference]: With dead ends: 2310 [2023-11-29 01:45:22,381 INFO L226 Difference]: Without dead ends: 2049 [2023-11-29 01:45:22,382 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 01:45:22,383 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 1502 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1698 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 01:45:22,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:45:22,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2023-11-29 01:45:22,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 2047. [2023-11-29 01:45:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 2045 states have (on average 1.758924205378973) internal successors, (3597), 2046 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:22,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 3597 transitions. [2023-11-29 01:45:22,445 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 3597 transitions. Word has length 66 [2023-11-29 01:45:22,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:22,445 INFO L495 AbstractCegarLoop]: Abstraction has 2047 states and 3597 transitions. [2023-11-29 01:45:22,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 3597 transitions. [2023-11-29 01:45:22,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 01:45:22,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:22,446 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] [2023-11-29 01:45:22,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:45:22,447 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:22,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:22,447 INFO L85 PathProgramCache]: Analyzing trace with hash -332567140, now seen corresponding path program 1 times [2023-11-29 01:45:22,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:22,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788420629] [2023-11-29 01:45:22,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:22,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:22,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:22,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:22,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788420629] [2023-11-29 01:45:22,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788420629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:22,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:22,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:45:22,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333528843] [2023-11-29 01:45:22,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:22,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:45:22,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:22,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:45:22,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:45:22,514 INFO L87 Difference]: Start difference. First operand 2047 states and 3597 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:22,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:22,565 INFO L93 Difference]: Finished difference Result 2991 states and 5059 transitions. [2023-11-29 01:45:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:45:22,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-11-29 01:45:22,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:22,579 INFO L225 Difference]: With dead ends: 2991 [2023-11-29 01:45:22,579 INFO L226 Difference]: Without dead ends: 2495 [2023-11-29 01:45:22,581 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 01:45:22,582 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1498 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1694 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 01:45:22,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1694 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:45:22,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2023-11-29 01:45:22,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2493. [2023-11-29 01:45:22,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 2491 states have (on average 1.7153753512645524) internal successors, (4273), 2492 states have internal predecessors, (4273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:22,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 4273 transitions. [2023-11-29 01:45:22,656 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 4273 transitions. Word has length 66 [2023-11-29 01:45:22,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:22,656 INFO L495 AbstractCegarLoop]: Abstraction has 2493 states and 4273 transitions. [2023-11-29 01:45:22,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:22,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 4273 transitions. [2023-11-29 01:45:22,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 01:45:22,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:22,658 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] [2023-11-29 01:45:22,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:45:22,658 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:22,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:22,658 INFO L85 PathProgramCache]: Analyzing trace with hash -958223204, now seen corresponding path program 1 times [2023-11-29 01:45:22,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:22,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309705976] [2023-11-29 01:45:22,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:22,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:22,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:22,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309705976] [2023-11-29 01:45:22,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309705976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:22,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:22,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:45:22,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440278805] [2023-11-29 01:45:22,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:22,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:45:22,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:22,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:45:22,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:45:22,721 INFO L87 Difference]: Start difference. First operand 2493 states and 4273 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:22,790 INFO L93 Difference]: Finished difference Result 4281 states and 7003 transitions. [2023-11-29 01:45:22,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:45:22,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-11-29 01:45:22,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:22,810 INFO L225 Difference]: With dead ends: 4281 [2023-11-29 01:45:22,810 INFO L226 Difference]: Without dead ends: 3339 [2023-11-29 01:45:22,812 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 01:45:22,813 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1496 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1696 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 01:45:22,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1696 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:45:22,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2023-11-29 01:45:22,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3337. [2023-11-29 01:45:22,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3337 states, 3335 states have (on average 1.657871064467766) internal successors, (5529), 3336 states have internal predecessors, (5529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:22,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3337 states to 3337 states and 5529 transitions. [2023-11-29 01:45:22,928 INFO L78 Accepts]: Start accepts. Automaton has 3337 states and 5529 transitions. Word has length 66 [2023-11-29 01:45:22,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:22,928 INFO L495 AbstractCegarLoop]: Abstraction has 3337 states and 5529 transitions. [2023-11-29 01:45:22,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:22,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3337 states and 5529 transitions. [2023-11-29 01:45:22,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 01:45:22,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:22,929 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] [2023-11-29 01:45:22,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:45:22,929 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:22,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:22,930 INFO L85 PathProgramCache]: Analyzing trace with hash -69489764, now seen corresponding path program 1 times [2023-11-29 01:45:22,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:22,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559973138] [2023-11-29 01:45:22,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:22,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:22,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:22,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:22,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559973138] [2023-11-29 01:45:22,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559973138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:22,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:22,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:45:22,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385750561] [2023-11-29 01:45:22,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:22,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:45:22,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:22,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:45:22,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:45:22,990 INFO L87 Difference]: Start difference. First operand 3337 states and 5529 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:23,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:23,096 INFO L93 Difference]: Finished difference Result 6717 states and 10603 transitions. [2023-11-29 01:45:23,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:45:23,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-11-29 01:45:23,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:23,121 INFO L225 Difference]: With dead ends: 6717 [2023-11-29 01:45:23,121 INFO L226 Difference]: Without dead ends: 4931 [2023-11-29 01:45:23,125 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 01:45:23,125 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1494 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1698 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 01:45:23,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:45:23,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4931 states. [2023-11-29 01:45:23,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4931 to 4929. [2023-11-29 01:45:23,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4929 states, 4927 states have (on average 1.5930586563831945) internal successors, (7849), 4928 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:23,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4929 states to 4929 states and 7849 transitions. [2023-11-29 01:45:23,302 INFO L78 Accepts]: Start accepts. Automaton has 4929 states and 7849 transitions. Word has length 66 [2023-11-29 01:45:23,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:23,302 INFO L495 AbstractCegarLoop]: Abstraction has 4929 states and 7849 transitions. [2023-11-29 01:45:23,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:23,303 INFO L276 IsEmpty]: Start isEmpty. Operand 4929 states and 7849 transitions. [2023-11-29 01:45:23,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 01:45:23,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:23,303 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] [2023-11-29 01:45:23,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:45:23,304 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:23,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:23,304 INFO L85 PathProgramCache]: Analyzing trace with hash -372511076, now seen corresponding path program 1 times [2023-11-29 01:45:23,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:23,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501321257] [2023-11-29 01:45:23,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:23,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:23,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:23,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501321257] [2023-11-29 01:45:23,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501321257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:23,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:23,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:45:23,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008252852] [2023-11-29 01:45:23,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:23,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:45:23,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:23,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:45:23,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:45:23,365 INFO L87 Difference]: Start difference. First operand 4929 states and 7849 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:23,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:23,570 INFO L93 Difference]: Finished difference Result 11301 states and 17227 transitions. [2023-11-29 01:45:23,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:45:23,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-11-29 01:45:23,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:23,587 INFO L225 Difference]: With dead ends: 11301 [2023-11-29 01:45:23,587 INFO L226 Difference]: Without dead ends: 7923 [2023-11-29 01:45:23,592 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 01:45:23,593 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1500 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1700 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 01:45:23,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1700 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:45:23,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7923 states. [2023-11-29 01:45:23,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7923 to 7921. [2023-11-29 01:45:23,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7921 states, 7919 states have (on average 1.5286020962242708) internal successors, (12105), 7920 states have internal predecessors, (12105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:23,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7921 states to 7921 states and 12105 transitions. [2023-11-29 01:45:23,879 INFO L78 Accepts]: Start accepts. Automaton has 7921 states and 12105 transitions. Word has length 66 [2023-11-29 01:45:23,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:23,880 INFO L495 AbstractCegarLoop]: Abstraction has 7921 states and 12105 transitions. [2023-11-29 01:45:23,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:23,880 INFO L276 IsEmpty]: Start isEmpty. Operand 7921 states and 12105 transitions. [2023-11-29 01:45:23,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 01:45:23,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:23,884 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] [2023-11-29 01:45:23,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:45:23,884 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:23,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:23,884 INFO L85 PathProgramCache]: Analyzing trace with hash -889914948, now seen corresponding path program 1 times [2023-11-29 01:45:23,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:23,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891751206] [2023-11-29 01:45:23,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:23,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:24,098 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:45:24,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:24,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891751206] [2023-11-29 01:45:24,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891751206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:24,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:24,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:45:24,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315279147] [2023-11-29 01:45:24,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:24,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:45:24,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:24,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:45:24,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:45:24,100 INFO L87 Difference]: Start difference. First operand 7921 states and 12105 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:25,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:25,066 INFO L93 Difference]: Finished difference Result 45567 states and 66928 transitions. [2023-11-29 01:45:25,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:45:25,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 86 [2023-11-29 01:45:25,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:25,131 INFO L225 Difference]: With dead ends: 45567 [2023-11-29 01:45:25,131 INFO L226 Difference]: Without dead ends: 41085 [2023-11-29 01:45:25,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:45:25,146 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 8059 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8059 SdHoareTripleChecker+Valid, 3989 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:25,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8059 Valid, 3989 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:45:25,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41085 states. [2023-11-29 01:45:25,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41085 to 13361. [2023-11-29 01:45:25,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13361 states, 13359 states have (on average 1.493000973126731) internal successors, (19945), 13360 states have internal predecessors, (19945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:25,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13361 states to 13361 states and 19945 transitions. [2023-11-29 01:45:25,720 INFO L78 Accepts]: Start accepts. Automaton has 13361 states and 19945 transitions. Word has length 86 [2023-11-29 01:45:25,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:25,721 INFO L495 AbstractCegarLoop]: Abstraction has 13361 states and 19945 transitions. [2023-11-29 01:45:25,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:25,721 INFO L276 IsEmpty]: Start isEmpty. Operand 13361 states and 19945 transitions. [2023-11-29 01:45:25,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 01:45:25,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:25,724 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] [2023-11-29 01:45:25,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:45:25,725 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:25,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:25,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1300301636, now seen corresponding path program 1 times [2023-11-29 01:45:25,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:25,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593530044] [2023-11-29 01:45:25,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:25,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:45:25,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:25,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593530044] [2023-11-29 01:45:25,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593530044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:25,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:25,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:45:25,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542747299] [2023-11-29 01:45:25,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:25,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:45:25,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:25,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:45:25,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:45:25,877 INFO L87 Difference]: Start difference. First operand 13361 states and 19945 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:27,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:27,107 INFO L93 Difference]: Finished difference Result 51935 states and 76144 transitions. [2023-11-29 01:45:27,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:45:27,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 86 [2023-11-29 01:45:27,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:27,162 INFO L225 Difference]: With dead ends: 51935 [2023-11-29 01:45:27,162 INFO L226 Difference]: Without dead ends: 45565 [2023-11-29 01:45:27,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:45:27,177 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 8063 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8063 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:27,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8063 Valid, 3935 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:45:27,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45565 states. [2023-11-29 01:45:27,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45565 to 21969. [2023-11-29 01:45:28,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21969 states, 21967 states have (on average 1.471707561342013) internal successors, (32329), 21968 states have internal predecessors, (32329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:28,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21969 states to 21969 states and 32329 transitions. [2023-11-29 01:45:28,046 INFO L78 Accepts]: Start accepts. Automaton has 21969 states and 32329 transitions. Word has length 86 [2023-11-29 01:45:28,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:28,046 INFO L495 AbstractCegarLoop]: Abstraction has 21969 states and 32329 transitions. [2023-11-29 01:45:28,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:28,047 INFO L276 IsEmpty]: Start isEmpty. Operand 21969 states and 32329 transitions. [2023-11-29 01:45:28,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 01:45:28,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:28,051 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] [2023-11-29 01:45:28,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:45:28,051 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:28,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:28,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1528940868, now seen corresponding path program 1 times [2023-11-29 01:45:28,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:28,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444580238] [2023-11-29 01:45:28,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:28,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 01:45:28,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:28,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444580238] [2023-11-29 01:45:28,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444580238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:28,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:28,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:45:28,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055348082] [2023-11-29 01:45:28,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:28,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:45:28,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:28,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:45:28,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:45:28,245 INFO L87 Difference]: Start difference. First operand 21969 states and 32329 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:29,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:29,708 INFO L93 Difference]: Finished difference Result 58303 states and 85328 transitions. [2023-11-29 01:45:29,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:45:29,709 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-29 01:45:29,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:29,773 INFO L225 Difference]: With dead ends: 58303 [2023-11-29 01:45:29,774 INFO L226 Difference]: Without dead ends: 51933 [2023-11-29 01:45:29,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:45:29,789 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 8103 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8103 SdHoareTripleChecker+Valid, 3954 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:29,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8103 Valid, 3954 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:45:29,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51933 states. [2023-11-29 01:45:30,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51933 to 28337. [2023-11-29 01:45:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28337 states, 28335 states have (on average 1.4650785247926592) internal successors, (41513), 28336 states have internal predecessors, (41513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28337 states to 28337 states and 41513 transitions. [2023-11-29 01:45:30,881 INFO L78 Accepts]: Start accepts. Automaton has 28337 states and 41513 transitions. Word has length 86 [2023-11-29 01:45:30,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:30,882 INFO L495 AbstractCegarLoop]: Abstraction has 28337 states and 41513 transitions. [2023-11-29 01:45:30,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:30,882 INFO L276 IsEmpty]: Start isEmpty. Operand 28337 states and 41513 transitions. [2023-11-29 01:45:30,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 01:45:30,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:30,888 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] [2023-11-29 01:45:30,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 01:45:30,889 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:30,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:30,890 INFO L85 PathProgramCache]: Analyzing trace with hash 2140370364, now seen corresponding path program 1 times [2023-11-29 01:45:30,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:30,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641153064] [2023-11-29 01:45:30,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:30,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:31,151 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 01:45:31,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:31,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641153064] [2023-11-29 01:45:31,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641153064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:31,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:31,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:45:31,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001808321] [2023-11-29 01:45:31,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:31,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:45:31,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:31,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:45:31,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:45:31,154 INFO L87 Difference]: Start difference. First operand 28337 states and 41513 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:33,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:33,079 INFO L93 Difference]: Finished difference Result 64671 states and 94512 transitions. [2023-11-29 01:45:33,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:45:33,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-29 01:45:33,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:33,171 INFO L225 Difference]: With dead ends: 64671 [2023-11-29 01:45:33,171 INFO L226 Difference]: Without dead ends: 58301 [2023-11-29 01:45:33,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:45:33,188 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8157 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8157 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:33,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8157 Valid, 3919 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:45:33,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58301 states. [2023-11-29 01:45:34,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58301 to 34705. [2023-11-29 01:45:34,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34705 states, 34703 states have (on average 1.4608823444658963) internal successors, (50697), 34704 states have internal predecessors, (50697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:34,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34705 states to 34705 states and 50697 transitions. [2023-11-29 01:45:34,497 INFO L78 Accepts]: Start accepts. Automaton has 34705 states and 50697 transitions. Word has length 86 [2023-11-29 01:45:34,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:34,498 INFO L495 AbstractCegarLoop]: Abstraction has 34705 states and 50697 transitions. [2023-11-29 01:45:34,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:34,498 INFO L276 IsEmpty]: Start isEmpty. Operand 34705 states and 50697 transitions. [2023-11-29 01:45:34,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 01:45:34,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:34,503 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] [2023-11-29 01:45:34,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 01:45:34,503 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:34,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:34,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1265863492, now seen corresponding path program 1 times [2023-11-29 01:45:34,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:34,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005144898] [2023-11-29 01:45:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:34,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:34,696 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:45:34,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:34,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005144898] [2023-11-29 01:45:34,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005144898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:34,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:34,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:45:34,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504367581] [2023-11-29 01:45:34,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:34,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:45:34,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:34,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:45:34,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:45:34,698 INFO L87 Difference]: Start difference. First operand 34705 states and 50697 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:36,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:36,926 INFO L93 Difference]: Finished difference Result 71039 states and 103696 transitions. [2023-11-29 01:45:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:45:36,926 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-29 01:45:36,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:37,011 INFO L225 Difference]: With dead ends: 71039 [2023-11-29 01:45:37,011 INFO L226 Difference]: Without dead ends: 64669 [2023-11-29 01:45:37,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:45:37,034 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8073 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8073 SdHoareTripleChecker+Valid, 3975 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:37,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8073 Valid, 3975 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:45:37,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64669 states. [2023-11-29 01:45:38,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64669 to 41073. [2023-11-29 01:45:38,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41073 states, 41071 states have (on average 1.4579873876944802) internal successors, (59881), 41072 states have internal predecessors, (59881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:38,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41073 states to 41073 states and 59881 transitions. [2023-11-29 01:45:38,400 INFO L78 Accepts]: Start accepts. Automaton has 41073 states and 59881 transitions. Word has length 86 [2023-11-29 01:45:38,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:38,400 INFO L495 AbstractCegarLoop]: Abstraction has 41073 states and 59881 transitions. [2023-11-29 01:45:38,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand 41073 states and 59881 transitions. [2023-11-29 01:45:38,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 01:45:38,404 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:38,404 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] [2023-11-29 01:45:38,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 01:45:38,405 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:38,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:38,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1568884804, now seen corresponding path program 1 times [2023-11-29 01:45:38,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:38,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189996775] [2023-11-29 01:45:38,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:38,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:38,623 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:45:38,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:38,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189996775] [2023-11-29 01:45:38,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189996775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:38,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:38,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:45:38,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739825075] [2023-11-29 01:45:38,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:38,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:45:38,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:38,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:45:38,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:45:38,626 INFO L87 Difference]: Start difference. First operand 41073 states and 59881 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:40,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:40,746 INFO L93 Difference]: Finished difference Result 77407 states and 112880 transitions. [2023-11-29 01:45:40,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:45:40,747 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-29 01:45:40,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:40,849 INFO L225 Difference]: With dead ends: 77407 [2023-11-29 01:45:40,849 INFO L226 Difference]: Without dead ends: 71037 [2023-11-29 01:45:40,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:45:40,869 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 8010 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8010 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:40,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8010 Valid, 4111 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:45:40,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71037 states. [2023-11-29 01:45:43,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71037 to 47441. [2023-11-29 01:45:43,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47441 states, 47439 states have (on average 1.455869643120639) internal successors, (69065), 47440 states have internal predecessors, (69065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:43,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47441 states to 47441 states and 69065 transitions. [2023-11-29 01:45:43,206 INFO L78 Accepts]: Start accepts. Automaton has 47441 states and 69065 transitions. Word has length 86 [2023-11-29 01:45:43,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:43,207 INFO L495 AbstractCegarLoop]: Abstraction has 47441 states and 69065 transitions. [2023-11-29 01:45:43,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:43,207 INFO L276 IsEmpty]: Start isEmpty. Operand 47441 states and 69065 transitions. [2023-11-29 01:45:43,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 01:45:43,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:43,212 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] [2023-11-29 01:45:43,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 01:45:43,212 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:43,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:43,212 INFO L85 PathProgramCache]: Analyzing trace with hash 781458360, now seen corresponding path program 1 times [2023-11-29 01:45:43,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:43,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418870739] [2023-11-29 01:45:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:43,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:43,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:43,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418870739] [2023-11-29 01:45:43,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418870739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:43,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:43,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:45:43,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257366358] [2023-11-29 01:45:43,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:43,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:45:43,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:43,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:45:43,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:45:43,310 INFO L87 Difference]: Start difference. First operand 47441 states and 69065 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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 01:45:44,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:44,701 INFO L93 Difference]: Finished difference Result 93333 states and 135307 transitions. [2023-11-29 01:45:44,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:45:44,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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 01:45:44,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:44,755 INFO L225 Difference]: With dead ends: 93333 [2023-11-29 01:45:44,755 INFO L226 Difference]: Without dead ends: 47443 [2023-11-29 01:45:44,787 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 01:45:44,788 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 53 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3143 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 01:45:44,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3143 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:45:44,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47443 states. [2023-11-29 01:45:46,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47443 to 47441. [2023-11-29 01:45:46,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47441 states, 47439 states have (on average 1.4413668079006725) internal successors, (68377), 47440 states have internal predecessors, (68377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:46,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47441 states to 47441 states and 68377 transitions. [2023-11-29 01:45:46,889 INFO L78 Accepts]: Start accepts. Automaton has 47441 states and 68377 transitions. Word has length 87 [2023-11-29 01:45:46,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:46,889 INFO L495 AbstractCegarLoop]: Abstraction has 47441 states and 68377 transitions. [2023-11-29 01:45:46,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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 01:45:46,890 INFO L276 IsEmpty]: Start isEmpty. Operand 47441 states and 68377 transitions. [2023-11-29 01:45:46,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 01:45:46,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:46,894 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] [2023-11-29 01:45:46,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 01:45:46,894 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:46,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:46,895 INFO L85 PathProgramCache]: Analyzing trace with hash 114924484, now seen corresponding path program 1 times [2023-11-29 01:45:46,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:46,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809150460] [2023-11-29 01:45:46,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:46,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:47,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:47,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809150460] [2023-11-29 01:45:47,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809150460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:47,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:47,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:45:47,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835292170] [2023-11-29 01:45:47,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:47,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:45:47,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:47,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:45:47,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:45:47,108 INFO L87 Difference]: Start difference. First operand 47441 states and 68377 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:47,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:47,677 INFO L93 Difference]: Finished difference Result 64265 states and 92640 transitions. [2023-11-29 01:45:47,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:45:47,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2023-11-29 01:45:47,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:47,693 INFO L225 Difference]: With dead ends: 64265 [2023-11-29 01:45:47,693 INFO L226 Difference]: Without dead ends: 18375 [2023-11-29 01:45:47,709 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 01:45:47,710 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 47 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:47,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3140 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:45:47,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18375 states. [2023-11-29 01:45:48,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18375 to 18368. [2023-11-29 01:45:48,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18368 states, 18366 states have (on average 1.4613960579331373) internal successors, (26840), 18367 states have internal predecessors, (26840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:48,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18368 states to 18368 states and 26840 transitions. [2023-11-29 01:45:48,236 INFO L78 Accepts]: Start accepts. Automaton has 18368 states and 26840 transitions. Word has length 88 [2023-11-29 01:45:48,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:48,236 INFO L495 AbstractCegarLoop]: Abstraction has 18368 states and 26840 transitions. [2023-11-29 01:45:48,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:48,236 INFO L276 IsEmpty]: Start isEmpty. Operand 18368 states and 26840 transitions. [2023-11-29 01:45:48,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 01:45:48,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:48,238 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] [2023-11-29 01:45:48,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 01:45:48,238 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:48,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:48,239 INFO L85 PathProgramCache]: Analyzing trace with hash -418898426, now seen corresponding path program 1 times [2023-11-29 01:45:48,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:48,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827160550] [2023-11-29 01:45:48,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:48,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:48,311 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:48,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:48,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827160550] [2023-11-29 01:45:48,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827160550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:48,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:48,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:45:48,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694303580] [2023-11-29 01:45:48,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:48,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:45:48,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:48,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:45:48,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:45:48,313 INFO L87 Difference]: Start difference. First operand 18368 states and 26840 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 01:45:48,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:48,569 INFO L93 Difference]: Finished difference Result 26772 states and 38842 transitions. [2023-11-29 01:45:48,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:45:48,569 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 01:45:48,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:48,578 INFO L225 Difference]: With dead ends: 26772 [2023-11-29 01:45:48,578 INFO L226 Difference]: Without dead ends: 9970 [2023-11-29 01:45:48,585 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 01:45:48,586 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 49 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3119 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 01:45:48,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3119 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:45:48,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9970 states. [2023-11-29 01:45:48,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9970 to 9968. [2023-11-29 01:45:48,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9968 states, 9966 states have (on average 1.4770218743728678) internal successors, (14720), 9967 states have internal predecessors, (14720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:48,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9968 states to 9968 states and 14720 transitions. [2023-11-29 01:45:48,857 INFO L78 Accepts]: Start accepts. Automaton has 9968 states and 14720 transitions. Word has length 89 [2023-11-29 01:45:48,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:48,858 INFO L495 AbstractCegarLoop]: Abstraction has 9968 states and 14720 transitions. [2023-11-29 01:45:48,858 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 01:45:48,858 INFO L276 IsEmpty]: Start isEmpty. Operand 9968 states and 14720 transitions. [2023-11-29 01:45:48,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 01:45:48,859 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:48,859 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] [2023-11-29 01:45:48,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 01:45:48,859 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:48,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:48,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1396517332, now seen corresponding path program 1 times [2023-11-29 01:45:48,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:48,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012107924] [2023-11-29 01:45:48,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:48,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:48,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:48,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012107924] [2023-11-29 01:45:48,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012107924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:48,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:48,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:45:48,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920952953] [2023-11-29 01:45:48,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:48,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:45:48,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:48,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:45:48,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:45:48,959 INFO L87 Difference]: Start difference. First operand 9968 states and 14720 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 01:45:49,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:49,249 INFO L93 Difference]: Finished difference Result 14172 states and 20662 transitions. [2023-11-29 01:45:49,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:45:49,250 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 01:45:49,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:49,255 INFO L225 Difference]: With dead ends: 14172 [2023-11-29 01:45:49,256 INFO L226 Difference]: Without dead ends: 5770 [2023-11-29 01:45:49,259 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 01:45:49,260 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 46 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3104 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 01:45:49,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3104 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:45:49,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5770 states. [2023-11-29 01:45:49,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5770 to 5768. [2023-11-29 01:45:49,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5766 states have (on average 1.5123135622615331) internal successors, (8720), 5767 states have internal predecessors, (8720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:49,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 8720 transitions. [2023-11-29 01:45:49,434 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 8720 transitions. Word has length 91 [2023-11-29 01:45:49,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:49,434 INFO L495 AbstractCegarLoop]: Abstraction has 5768 states and 8720 transitions. [2023-11-29 01:45:49,434 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 01:45:49,434 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 8720 transitions. [2023-11-29 01:45:49,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 01:45:49,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:49,435 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] [2023-11-29 01:45:49,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 01:45:49,435 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:49,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:49,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1655112071, now seen corresponding path program 1 times [2023-11-29 01:45:49,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:49,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669519353] [2023-11-29 01:45:49,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:49,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:49,646 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:49,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:49,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669519353] [2023-11-29 01:45:49,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669519353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:49,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:49,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:45:49,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708012858] [2023-11-29 01:45:49,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:49,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:45:49,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:49,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:45:49,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:45:49,648 INFO L87 Difference]: Start difference. First operand 5768 states and 8720 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:55,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:55,625 INFO L93 Difference]: Finished difference Result 9525 states and 15610 transitions. [2023-11-29 01:45:55,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:45:55,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-11-29 01:45:55,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:55,633 INFO L225 Difference]: With dead ends: 9525 [2023-11-29 01:45:55,633 INFO L226 Difference]: Without dead ends: 8021 [2023-11-29 01:45:55,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:45:55,635 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 2400 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4808 mSolverCounterSat, 1138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 5946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1138 IncrementalHoareTripleChecker+Valid, 4808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:55,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2400 Valid, 831 Invalid, 5946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1138 Valid, 4808 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-29 01:45:55,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8021 states. [2023-11-29 01:45:55,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8021 to 8021. [2023-11-29 01:45:55,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8021 states, 8019 states have (on average 1.4102755954607806) internal successors, (11309), 8020 states have internal predecessors, (11309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:55,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8021 states to 8021 states and 11309 transitions. [2023-11-29 01:45:55,805 INFO L78 Accepts]: Start accepts. Automaton has 8021 states and 11309 transitions. Word has length 92 [2023-11-29 01:45:55,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:55,805 INFO L495 AbstractCegarLoop]: Abstraction has 8021 states and 11309 transitions. [2023-11-29 01:45:55,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:55,805 INFO L276 IsEmpty]: Start isEmpty. Operand 8021 states and 11309 transitions. [2023-11-29 01:45:55,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 01:45:55,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:55,806 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] [2023-11-29 01:45:55,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 01:45:55,807 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:55,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:55,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1276371166, now seen corresponding path program 1 times [2023-11-29 01:45:55,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:55,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009299333] [2023-11-29 01:45:55,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:55,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:55,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:55,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009299333] [2023-11-29 01:45:55,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009299333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:55,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:55,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:45:55,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970258463] [2023-11-29 01:45:55,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:55,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:45:55,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:55,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:45:55,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:45:55,880 INFO L87 Difference]: Start difference. First operand 8021 states and 11309 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 01:45:56,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:56,012 INFO L93 Difference]: Finished difference Result 10125 states and 14251 transitions. [2023-11-29 01:45:56,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:45:56,013 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 01:45:56,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:56,018 INFO L225 Difference]: With dead ends: 10125 [2023-11-29 01:45:56,018 INFO L226 Difference]: Without dead ends: 5923 [2023-11-29 01:45:56,020 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 01:45:56,021 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 43 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3089 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 01:45:56,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3089 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:45:56,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5923 states. [2023-11-29 01:45:56,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5923 to 5921. [2023-11-29 01:45:56,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5921 states, 5919 states have (on average 1.4088528467646562) internal successors, (8339), 5920 states have internal predecessors, (8339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:56,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5921 states to 5921 states and 8339 transitions. [2023-11-29 01:45:56,130 INFO L78 Accepts]: Start accepts. Automaton has 5921 states and 8339 transitions. Word has length 93 [2023-11-29 01:45:56,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:56,130 INFO L495 AbstractCegarLoop]: Abstraction has 5921 states and 8339 transitions. [2023-11-29 01:45:56,130 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 01:45:56,130 INFO L276 IsEmpty]: Start isEmpty. Operand 5921 states and 8339 transitions. [2023-11-29 01:45:56,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-29 01:45:56,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:56,131 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] [2023-11-29 01:45:56,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 01:45:56,132 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:56,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:56,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1865380126, now seen corresponding path program 1 times [2023-11-29 01:45:56,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:56,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712287022] [2023-11-29 01:45:56,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:56,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 01:45:56,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:56,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712287022] [2023-11-29 01:45:56,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712287022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:56,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:56,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:45:56,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141037544] [2023-11-29 01:45:56,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:56,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:45:56,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:56,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:45:56,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:45:56,191 INFO L87 Difference]: Start difference. First operand 5921 states and 8339 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:59,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:59,607 INFO L93 Difference]: Finished difference Result 10429 states and 15722 transitions. [2023-11-29 01:45:59,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:45:59,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-29 01:45:59,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:59,614 INFO L225 Difference]: With dead ends: 10429 [2023-11-29 01:45:59,614 INFO L226 Difference]: Without dead ends: 7423 [2023-11-29 01:45:59,616 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 01:45:59,616 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 846 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:59,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 591 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 01:45:59,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7423 states. [2023-11-29 01:45:59,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7423 to 7423. [2023-11-29 01:45:59,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7423 states, 7421 states have (on average 1.38269774962943) internal successors, (10261), 7422 states have internal predecessors, (10261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7423 states to 7423 states and 10261 transitions. [2023-11-29 01:45:59,735 INFO L78 Accepts]: Start accepts. Automaton has 7423 states and 10261 transitions. Word has length 94 [2023-11-29 01:45:59,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:59,735 INFO L495 AbstractCegarLoop]: Abstraction has 7423 states and 10261 transitions. [2023-11-29 01:45:59,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:59,736 INFO L276 IsEmpty]: Start isEmpty. Operand 7423 states and 10261 transitions. [2023-11-29 01:45:59,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 01:45:59,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:59,736 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] [2023-11-29 01:45:59,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 01:45:59,737 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:59,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:59,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1285169680, now seen corresponding path program 1 times [2023-11-29 01:45:59,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:59,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511376575] [2023-11-29 01:45:59,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:59,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:45:59,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:59,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511376575] [2023-11-29 01:45:59,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511376575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:59,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:59,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:45:59,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629880798] [2023-11-29 01:45:59,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:59,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:45:59,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:59,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:45:59,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:45:59,830 INFO L87 Difference]: Start difference. First operand 7423 states and 10261 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:45:59,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:59,925 INFO L93 Difference]: Finished difference Result 8477 states and 11718 transitions. [2023-11-29 01:45:59,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:45:59,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-11-29 01:45:59,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:59,930 INFO L225 Difference]: With dead ends: 8477 [2023-11-29 01:45:59,930 INFO L226 Difference]: Without dead ends: 6375 [2023-11-29 01:45:59,932 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 01:45:59,932 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 40 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3074 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 01:45:59,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3074 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:45:59,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6375 states. [2023-11-29 01:46:00,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6375 to 6373. [2023-11-29 01:46:00,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6373 states, 6371 states have (on average 1.3798461779940354) internal successors, (8791), 6372 states have internal predecessors, (8791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:00,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6373 states to 6373 states and 8791 transitions. [2023-11-29 01:46:00,018 INFO L78 Accepts]: Start accepts. Automaton has 6373 states and 8791 transitions. Word has length 95 [2023-11-29 01:46:00,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:00,019 INFO L495 AbstractCegarLoop]: Abstraction has 6373 states and 8791 transitions. [2023-11-29 01:46:00,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:00,019 INFO L276 IsEmpty]: Start isEmpty. Operand 6373 states and 8791 transitions. [2023-11-29 01:46:00,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 01:46:00,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:00,020 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:46:00,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 01:46:00,020 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:46:00,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:00,021 INFO L85 PathProgramCache]: Analyzing trace with hash 865289790, now seen corresponding path program 1 times [2023-11-29 01:46:00,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:00,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214490475] [2023-11-29 01:46:00,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:00,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:46:00,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:00,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214490475] [2023-11-29 01:46:00,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214490475] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:46:00,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546860842] [2023-11-29 01:46:00,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:00,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:00,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:00,134 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:00,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:46:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:00,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:46:00,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:00,467 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:46:00,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:46:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:46:00,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546860842] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:46:00,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:46:00,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-11-29 01:46:00,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414600526] [2023-11-29 01:46:00,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:46:00,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:46:00,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:00,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:46:00,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:46:00,896 INFO L87 Difference]: Start difference. First operand 6373 states and 8791 transitions. Second operand has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:01,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:01,085 INFO L93 Difference]: Finished difference Result 8909 states and 12190 transitions. [2023-11-29 01:46:01,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:46:01,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 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 97 [2023-11-29 01:46:01,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:01,093 INFO L225 Difference]: With dead ends: 8909 [2023-11-29 01:46:01,093 INFO L226 Difference]: Without dead ends: 7857 [2023-11-29 01:46:01,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:46:01,096 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 3021 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3021 SdHoareTripleChecker+Valid, 3392 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:01,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3021 Valid, 3392 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:46:01,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7857 states. [2023-11-29 01:46:01,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7857 to 7780. [2023-11-29 01:46:01,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7780 states, 7778 states have (on average 1.3605039856004115) internal successors, (10582), 7779 states have internal predecessors, (10582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:01,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7780 states to 7780 states and 10582 transitions. [2023-11-29 01:46:01,250 INFO L78 Accepts]: Start accepts. Automaton has 7780 states and 10582 transitions. Word has length 97 [2023-11-29 01:46:01,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:01,250 INFO L495 AbstractCegarLoop]: Abstraction has 7780 states and 10582 transitions. [2023-11-29 01:46:01,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:01,251 INFO L276 IsEmpty]: Start isEmpty. Operand 7780 states and 10582 transitions. [2023-11-29 01:46:01,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 01:46:01,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:01,252 INFO L195 NwaCegarLoop]: trace histogram [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 01:46:01,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:46:01,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 01:46:01,453 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:46:01,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:01,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1164140212, now seen corresponding path program 1 times [2023-11-29 01:46:01,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:01,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028514591] [2023-11-29 01:46:01,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:01,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:02,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:02,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028514591] [2023-11-29 01:46:02,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028514591] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:46:02,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715790344] [2023-11-29 01:46:02,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:02,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:02,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:02,730 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:02,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:46:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:02,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:46:02,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:03,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:46:04,367 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:04,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715790344] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:46:04,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:46:04,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-11-29 01:46:04,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587195761] [2023-11-29 01:46:04,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:46:04,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 01:46:04,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:04,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 01:46:04,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:46:04,370 INFO L87 Difference]: Start difference. First operand 7780 states and 10582 transitions. Second operand has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:07,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:07,546 INFO L93 Difference]: Finished difference Result 19624 states and 26143 transitions. [2023-11-29 01:46:07,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 01:46:07,547 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 states have internal predecessors, (256), 0 states have call successors, (0), 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 98 [2023-11-29 01:46:07,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:07,559 INFO L225 Difference]: With dead ends: 19624 [2023-11-29 01:46:07,559 INFO L226 Difference]: Without dead ends: 17209 [2023-11-29 01:46:07,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1004, Invalid=3966, Unknown=0, NotChecked=0, Total=4970 [2023-11-29 01:46:07,565 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 25899 mSDsluCounter, 6678 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25899 SdHoareTripleChecker+Valid, 8201 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:07,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25899 Valid, 8201 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:46:07,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17209 states. [2023-11-29 01:46:07,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17209 to 16417. [2023-11-29 01:46:07,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16417 states, 16415 states have (on average 1.3282363691745356) internal successors, (21803), 16416 states have internal predecessors, (21803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16417 states to 16417 states and 21803 transitions. [2023-11-29 01:46:08,010 INFO L78 Accepts]: Start accepts. Automaton has 16417 states and 21803 transitions. Word has length 98 [2023-11-29 01:46:08,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:08,010 INFO L495 AbstractCegarLoop]: Abstraction has 16417 states and 21803 transitions. [2023-11-29 01:46:08,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:08,011 INFO L276 IsEmpty]: Start isEmpty. Operand 16417 states and 21803 transitions. [2023-11-29 01:46:08,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 01:46:08,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:08,012 INFO L195 NwaCegarLoop]: trace histogram [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 01:46:08,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:46:08,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:46:08,213 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:46:08,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:08,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1133922124, now seen corresponding path program 1 times [2023-11-29 01:46:08,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:08,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663305650] [2023-11-29 01:46:08,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:08,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:09,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:09,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663305650] [2023-11-29 01:46:09,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663305650] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:46:09,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598984388] [2023-11-29 01:46:09,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:09,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:09,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:09,160 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:09,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:46:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:09,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:46:09,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:10,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:46:11,082 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:11,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598984388] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:46:11,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:46:11,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-11-29 01:46:11,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000644718] [2023-11-29 01:46:11,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:46:11,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 01:46:11,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:11,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 01:46:11,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 01:46:11,085 INFO L87 Difference]: Start difference. First operand 16417 states and 21803 transitions. Second operand has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:17,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:17,092 INFO L93 Difference]: Finished difference Result 68529 states and 89522 transitions. [2023-11-29 01:46:17,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-29 01:46:17,092 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 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 98 [2023-11-29 01:46:17,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:17,141 INFO L225 Difference]: With dead ends: 68529 [2023-11-29 01:46:17,141 INFO L226 Difference]: Without dead ends: 57771 [2023-11-29 01:46:17,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2233 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1531, Invalid=7025, Unknown=0, NotChecked=0, Total=8556 [2023-11-29 01:46:17,158 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 28274 mSDsluCounter, 9764 mSDsCounter, 0 mSdLazyCounter, 1863 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28274 SdHoareTripleChecker+Valid, 11289 SdHoareTripleChecker+Invalid, 1911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:17,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28274 Valid, 11289 Invalid, 1911 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 1863 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:46:17,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57771 states. [2023-11-29 01:46:18,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57771 to 53427. [2023-11-29 01:46:18,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53427 states, 53425 states have (on average 1.2941319606925596) internal successors, (69139), 53426 states have internal predecessors, (69139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53427 states to 53427 states and 69139 transitions. [2023-11-29 01:46:18,899 INFO L78 Accepts]: Start accepts. Automaton has 53427 states and 69139 transitions. Word has length 98 [2023-11-29 01:46:18,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:18,899 INFO L495 AbstractCegarLoop]: Abstraction has 53427 states and 69139 transitions. [2023-11-29 01:46:18,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:18,899 INFO L276 IsEmpty]: Start isEmpty. Operand 53427 states and 69139 transitions. [2023-11-29 01:46:18,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 01:46:18,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:18,902 INFO L195 NwaCegarLoop]: trace histogram [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 01:46:18,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 01:46:19,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:19,103 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:46:19,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:19,103 INFO L85 PathProgramCache]: Analyzing trace with hash -414327924, now seen corresponding path program 1 times [2023-11-29 01:46:19,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:19,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521652181] [2023-11-29 01:46:19,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:19,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:19,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:19,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521652181] [2023-11-29 01:46:19,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521652181] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:46:19,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780475807] [2023-11-29 01:46:19,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:19,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:19,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:19,407 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:19,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:46:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:19,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:46:19,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:20,104 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:20,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:46:21,124 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:21,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780475807] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:46:21,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:46:21,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-11-29 01:46:21,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052017655] [2023-11-29 01:46:21,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:46:21,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 01:46:21,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:21,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 01:46:21,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-11-29 01:46:21,127 INFO L87 Difference]: Start difference. First operand 53427 states and 69139 transitions. Second operand has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:24,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:24,008 INFO L93 Difference]: Finished difference Result 103274 states and 132885 transitions. [2023-11-29 01:46:24,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 01:46:24,009 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 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 99 [2023-11-29 01:46:24,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:24,061 INFO L225 Difference]: With dead ends: 103274 [2023-11-29 01:46:24,061 INFO L226 Difference]: Without dead ends: 57327 [2023-11-29 01:46:24,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=690, Invalid=2616, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 01:46:24,094 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 18951 mSDsluCounter, 8046 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18951 SdHoareTripleChecker+Valid, 9576 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:24,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18951 Valid, 9576 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:46:24,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57327 states. [2023-11-29 01:46:25,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57327 to 43857. [2023-11-29 01:46:25,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43857 states, 43855 states have (on average 1.2705734807889637) internal successors, (55721), 43856 states have internal predecessors, (55721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:25,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43857 states to 43857 states and 55721 transitions. [2023-11-29 01:46:25,810 INFO L78 Accepts]: Start accepts. Automaton has 43857 states and 55721 transitions. Word has length 99 [2023-11-29 01:46:25,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:25,810 INFO L495 AbstractCegarLoop]: Abstraction has 43857 states and 55721 transitions. [2023-11-29 01:46:25,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:25,811 INFO L276 IsEmpty]: Start isEmpty. Operand 43857 states and 55721 transitions. [2023-11-29 01:46:25,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 01:46:25,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:25,813 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:46:25,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:46:26,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 01:46:26,013 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:46:26,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:26,014 INFO L85 PathProgramCache]: Analyzing trace with hash -475343652, now seen corresponding path program 1 times [2023-11-29 01:46:26,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:26,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518000732] [2023-11-29 01:46:26,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:26,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:26,407 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:26,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:26,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518000732] [2023-11-29 01:46:26,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518000732] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:46:26,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820803879] [2023-11-29 01:46:26,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:26,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:26,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:26,408 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:26,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:46:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:26,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 01:46:26,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:27,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:46:28,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:28,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820803879] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:46:28,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:46:28,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 15] total 35 [2023-11-29 01:46:28,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254882933] [2023-11-29 01:46:28,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:46:28,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 01:46:28,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:28,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 01:46:28,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 01:46:28,808 INFO L87 Difference]: Start difference. First operand 43857 states and 55721 transitions. Second operand has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:34,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:34,299 INFO L93 Difference]: Finished difference Result 95214 states and 119197 transitions. [2023-11-29 01:46:34,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-29 01:46:34,299 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 01:46:34,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:34,352 INFO L225 Difference]: With dead ends: 95214 [2023-11-29 01:46:34,352 INFO L226 Difference]: Without dead ends: 59824 [2023-11-29 01:46:34,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1359 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1152, Invalid=4398, Unknown=0, NotChecked=0, Total=5550 [2023-11-29 01:46:34,375 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 18162 mSDsluCounter, 17029 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18162 SdHoareTripleChecker+Valid, 18552 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:34,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18162 Valid, 18552 Invalid, 1247 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:46:34,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59824 states. [2023-11-29 01:46:36,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59824 to 52096. [2023-11-29 01:46:36,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52096 states, 52094 states have (on average 1.2580527507966368) internal successors, (65537), 52095 states have internal predecessors, (65537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52096 states to 52096 states and 65537 transitions. [2023-11-29 01:46:36,881 INFO L78 Accepts]: Start accepts. Automaton has 52096 states and 65537 transitions. Word has length 100 [2023-11-29 01:46:36,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:36,881 INFO L495 AbstractCegarLoop]: Abstraction has 52096 states and 65537 transitions. [2023-11-29 01:46:36,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:36,881 INFO L276 IsEmpty]: Start isEmpty. Operand 52096 states and 65537 transitions. [2023-11-29 01:46:36,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 01:46:36,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:36,883 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 01:46:36,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:46:37,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 01:46:37,084 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:46:37,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:37,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1964735988, now seen corresponding path program 1 times [2023-11-29 01:46:37,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:37,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843911460] [2023-11-29 01:46:37,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:37,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:37,536 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:37,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:37,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843911460] [2023-11-29 01:46:37,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843911460] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:46:37,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493563688] [2023-11-29 01:46:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:37,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:37,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:37,537 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:37,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:46:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:37,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:46:37,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:38,282 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:38,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:46:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:39,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493563688] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:46:39,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:46:39,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-11-29 01:46:39,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096649387] [2023-11-29 01:46:39,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:46:39,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 01:46:39,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:39,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 01:46:39,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:46:39,594 INFO L87 Difference]: Start difference. First operand 52096 states and 65537 transitions. Second operand has 28 states, 28 states have (on average 9.428571428571429) internal successors, (264), 28 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:44,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:46:44,185 INFO L93 Difference]: Finished difference Result 144836 states and 180889 transitions. [2023-11-29 01:46:44,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:46:44,186 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.428571428571429) internal successors, (264), 28 states have internal predecessors, (264), 0 states have call successors, (0), 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 101 [2023-11-29 01:46:44,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:46:44,287 INFO L225 Difference]: With dead ends: 144836 [2023-11-29 01:46:44,287 INFO L226 Difference]: Without dead ends: 103467 [2023-11-29 01:46:44,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 01:46:44,307 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 19702 mSDsluCounter, 4916 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19702 SdHoareTripleChecker+Valid, 6452 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:46:44,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19702 Valid, 6452 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:46:44,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103467 states. [2023-11-29 01:46:48,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103467 to 98803. [2023-11-29 01:46:48,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98803 states, 98801 states have (on average 1.2415765022621228) internal successors, (122669), 98802 states have internal predecessors, (122669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:48,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98803 states to 98803 states and 122669 transitions. [2023-11-29 01:46:48,733 INFO L78 Accepts]: Start accepts. Automaton has 98803 states and 122669 transitions. Word has length 101 [2023-11-29 01:46:48,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:46:48,733 INFO L495 AbstractCegarLoop]: Abstraction has 98803 states and 122669 transitions. [2023-11-29 01:46:48,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.428571428571429) internal successors, (264), 28 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:46:48,733 INFO L276 IsEmpty]: Start isEmpty. Operand 98803 states and 122669 transitions. [2023-11-29 01:46:48,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 01:46:48,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:46:48,736 INFO L195 NwaCegarLoop]: trace histogram [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 01:46:48,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 01:46:48,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 01:46:48,937 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:46:48,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:46:48,937 INFO L85 PathProgramCache]: Analyzing trace with hash -137101132, now seen corresponding path program 1 times [2023-11-29 01:46:48,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:46:48,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373051331] [2023-11-29 01:46:48,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:48,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:46:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:49,933 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:49,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:46:49,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373051331] [2023-11-29 01:46:49,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373051331] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:46:49,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773313444] [2023-11-29 01:46:49,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:46:49,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:46:49,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:46:49,935 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:46:49,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:46:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:46:50,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 01:46:50,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:46:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:51,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:46:52,885 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:46:52,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773313444] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:46:52,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:46:52,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 34 [2023-11-29 01:46:52,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244260713] [2023-11-29 01:46:52,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:46:52,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 01:46:52,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:46:52,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 01:46:52,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 01:46:52,887 INFO L87 Difference]: Start difference. First operand 98803 states and 122669 transitions. Second operand has 34 states, 34 states have (on average 8.147058823529411) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:47:11,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:11,182 INFO L93 Difference]: Finished difference Result 267661 states and 329860 transitions. [2023-11-29 01:47:11,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-11-29 01:47:11,183 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 8.147058823529411) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-11-29 01:47:11,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:11,414 INFO L225 Difference]: With dead ends: 267661 [2023-11-29 01:47:11,414 INFO L226 Difference]: Without dead ends: 228855 [2023-11-29 01:47:11,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4969 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=2836, Invalid=12664, Unknown=0, NotChecked=0, Total=15500 [2023-11-29 01:47:11,442 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 19201 mSDsluCounter, 22522 mSDsCounter, 0 mSdLazyCounter, 2594 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19201 SdHoareTripleChecker+Valid, 24091 SdHoareTripleChecker+Invalid, 2692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:11,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19201 Valid, 24091 Invalid, 2692 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [98 Valid, 2594 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 01:47:11,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228855 states. [2023-11-29 01:47:16,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228855 to 84251. [2023-11-29 01:47:16,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84251 states, 84249 states have (on average 1.2400503270068488) internal successors, (104473), 84250 states have internal predecessors, (104473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:47:16,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84251 states to 84251 states and 104473 transitions. [2023-11-29 01:47:16,353 INFO L78 Accepts]: Start accepts. Automaton has 84251 states and 104473 transitions. Word has length 102 [2023-11-29 01:47:16,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:16,354 INFO L495 AbstractCegarLoop]: Abstraction has 84251 states and 104473 transitions. [2023-11-29 01:47:16,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.147058823529411) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:47:16,354 INFO L276 IsEmpty]: Start isEmpty. Operand 84251 states and 104473 transitions. [2023-11-29 01:47:16,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 01:47:16,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:16,356 INFO L195 NwaCegarLoop]: trace histogram [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 01:47:16,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:47:16,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:16,557 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:47:16,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:16,557 INFO L85 PathProgramCache]: Analyzing trace with hash -983993420, now seen corresponding path program 1 times [2023-11-29 01:47:16,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:16,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789500036] [2023-11-29 01:47:16,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:16,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:47:17,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:17,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789500036] [2023-11-29 01:47:17,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789500036] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:47:17,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582744913] [2023-11-29 01:47:17,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:17,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:17,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:17,349 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:17,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:47:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:17,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 01:47:17,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:47:18,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:47:19,534 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:47:19,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582744913] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:47:19,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:47:19,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2023-11-29 01:47:19,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235102859] [2023-11-29 01:47:19,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:47:19,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 01:47:19,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:19,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 01:47:19,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 01:47:19,536 INFO L87 Difference]: Start difference. First operand 84251 states and 104473 transitions. Second operand has 35 states, 35 states have (on average 7.3428571428571425) internal successors, (257), 35 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:47:35,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:47:35,225 INFO L93 Difference]: Finished difference Result 183298 states and 226029 transitions. [2023-11-29 01:47:35,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-11-29 01:47:35,226 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.3428571428571425) internal successors, (257), 35 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-11-29 01:47:35,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:47:35,356 INFO L225 Difference]: With dead ends: 183298 [2023-11-29 01:47:35,357 INFO L226 Difference]: Without dead ends: 142470 [2023-11-29 01:47:35,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3677 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2474, Invalid=10182, Unknown=0, NotChecked=0, Total=12656 [2023-11-29 01:47:35,382 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 16285 mSDsluCounter, 22561 mSDsCounter, 0 mSdLazyCounter, 2588 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16285 SdHoareTripleChecker+Valid, 24172 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:47:35,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16285 Valid, 24172 Invalid, 2670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 2588 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 01:47:35,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142470 states. [2023-11-29 01:47:39,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142470 to 65523. [2023-11-29 01:47:39,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65523 states, 65521 states have (on average 1.2423192564216052) internal successors, (81398), 65522 states have internal predecessors, (81398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:47:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65523 states to 65523 states and 81398 transitions. [2023-11-29 01:47:39,341 INFO L78 Accepts]: Start accepts. Automaton has 65523 states and 81398 transitions. Word has length 102 [2023-11-29 01:47:39,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:47:39,341 INFO L495 AbstractCegarLoop]: Abstraction has 65523 states and 81398 transitions. [2023-11-29 01:47:39,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.3428571428571425) internal successors, (257), 35 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:47:39,341 INFO L276 IsEmpty]: Start isEmpty. Operand 65523 states and 81398 transitions. [2023-11-29 01:47:39,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 01:47:39,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:47:39,343 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] [2023-11-29 01:47:39,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:47:39,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:39,544 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:47:39,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:47:39,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1844862206, now seen corresponding path program 1 times [2023-11-29 01:47:39,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:47:39,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899061585] [2023-11-29 01:47:39,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:39,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:47:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:42,473 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:47:42,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:47:42,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899061585] [2023-11-29 01:47:42,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899061585] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:47:42,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115163911] [2023-11-29 01:47:42,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:47:42,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:47:42,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:47:42,475 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:47:42,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:47:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:47:42,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 01:47:42,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:47:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:47:44,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:47:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:47:48,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115163911] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:47:48,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:47:48,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 17, 18] total 66 [2023-11-29 01:47:48,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541376731] [2023-11-29 01:47:48,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:47:48,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-11-29 01:47:48,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:47:48,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-11-29 01:47:48,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=3985, Unknown=0, NotChecked=0, Total=4290 [2023-11-29 01:47:48,303 INFO L87 Difference]: Start difference. First operand 65523 states and 81398 transitions. Second operand has 66 states, 66 states have (on average 4.136363636363637) internal successors, (273), 66 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:49:21,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:21,267 INFO L93 Difference]: Finished difference Result 185351 states and 227425 transitions. [2023-11-29 01:49:21,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 353 states. [2023-11-29 01:49:21,268 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.136363636363637) internal successors, (273), 66 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-11-29 01:49:21,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:21,425 INFO L225 Difference]: With dead ends: 185351 [2023-11-29 01:49:21,425 INFO L226 Difference]: Without dead ends: 158737 [2023-11-29 01:49:21,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65418 ImplicationChecksByTransitivity, 70.2s TimeCoverageRelationStatistics Valid=28073, Invalid=145399, Unknown=0, NotChecked=0, Total=173472 [2023-11-29 01:49:21,456 INFO L413 NwaCegarLoop]: 1749 mSDtfsCounter, 37951 mSDsluCounter, 41442 mSDsCounter, 0 mSdLazyCounter, 18734 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37951 SdHoareTripleChecker+Valid, 43191 SdHoareTripleChecker+Invalid, 18956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 18734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:21,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37951 Valid, 43191 Invalid, 18956 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [222 Valid, 18734 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2023-11-29 01:49:21,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158737 states. [2023-11-29 01:49:28,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158737 to 96711. [2023-11-29 01:49:28,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96711 states, 96709 states have (on average 1.23768211852051) internal successors, (119695), 96710 states have internal predecessors, (119695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:49:28,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96711 states to 96711 states and 119695 transitions. [2023-11-29 01:49:28,384 INFO L78 Accepts]: Start accepts. Automaton has 96711 states and 119695 transitions. Word has length 103 [2023-11-29 01:49:28,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:28,385 INFO L495 AbstractCegarLoop]: Abstraction has 96711 states and 119695 transitions. [2023-11-29 01:49:28,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.136363636363637) internal successors, (273), 66 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:49:28,385 INFO L276 IsEmpty]: Start isEmpty. Operand 96711 states and 119695 transitions. [2023-11-29 01:49:28,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-29 01:49:28,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:28,401 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:49:28,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:49:28,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 01:49:28,602 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:49:28,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:28,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1670205712, now seen corresponding path program 1 times [2023-11-29 01:49:28,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:28,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157504096] [2023-11-29 01:49:28,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:28,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:29,306 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 29 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:49:29,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:29,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157504096] [2023-11-29 01:49:29,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157504096] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:49:29,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366957570] [2023-11-29 01:49:29,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:29,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:29,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:49:29,308 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:49:29,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:49:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:29,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 01:49:29,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:49:30,203 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 76 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:49:30,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:49:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 55 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:49:31,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366957570] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:49:31,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:49:31,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-11-29 01:49:31,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694532750] [2023-11-29 01:49:31,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:49:31,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 01:49:31,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:49:31,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 01:49:31,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 01:49:31,828 INFO L87 Difference]: Start difference. First operand 96711 states and 119695 transitions. Second operand has 33 states, 33 states have (on average 12.909090909090908) internal successors, (426), 33 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:49:50,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:49:50,684 INFO L93 Difference]: Finished difference Result 236251 states and 292256 transitions. [2023-11-29 01:49:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-11-29 01:49:50,685 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 12.909090909090908) internal successors, (426), 33 states have internal predecessors, (426), 0 states have call successors, (0), 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 157 [2023-11-29 01:49:50,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:49:50,842 INFO L225 Difference]: With dead ends: 236251 [2023-11-29 01:49:50,842 INFO L226 Difference]: Without dead ends: 167499 [2023-11-29 01:49:50,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4876 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=3083, Invalid=14209, Unknown=0, NotChecked=0, Total=17292 [2023-11-29 01:49:50,875 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 17440 mSDsluCounter, 20778 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17440 SdHoareTripleChecker+Valid, 22356 SdHoareTripleChecker+Invalid, 2467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:49:50,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17440 Valid, 22356 Invalid, 2467 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 01:49:50,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167499 states. [2023-11-29 01:49:58,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167499 to 94183. [2023-11-29 01:49:58,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94183 states, 94181 states have (on average 1.229037703995498) internal successors, (115752), 94182 states have internal predecessors, (115752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:49:58,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94183 states to 94183 states and 115752 transitions. [2023-11-29 01:49:58,227 INFO L78 Accepts]: Start accepts. Automaton has 94183 states and 115752 transitions. Word has length 157 [2023-11-29 01:49:58,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:49:58,227 INFO L495 AbstractCegarLoop]: Abstraction has 94183 states and 115752 transitions. [2023-11-29 01:49:58,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 12.909090909090908) internal successors, (426), 33 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:49:58,227 INFO L276 IsEmpty]: Start isEmpty. Operand 94183 states and 115752 transitions. [2023-11-29 01:49:58,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-29 01:49:58,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:49:58,241 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:49:58,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:49:58,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:58,442 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:49:58,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:49:58,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1750871248, now seen corresponding path program 1 times [2023-11-29 01:49:58,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:49:58,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870158980] [2023-11-29 01:49:58,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:58,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:49:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 40 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:49:59,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:49:59,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870158980] [2023-11-29 01:49:59,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870158980] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:49:59,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472021364] [2023-11-29 01:49:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:49:59,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:49:59,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:49:59,162 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:49:59,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:49:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:49:59,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:49:59,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:50:00,244 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 42 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:50:00,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:50:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 40 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:50:02,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472021364] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:50:02,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:50:02,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-11-29 01:50:02,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411329456] [2023-11-29 01:50:02,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:50:02,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 01:50:02,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:50:02,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 01:50:02,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2023-11-29 01:50:02,348 INFO L87 Difference]: Start difference. First operand 94183 states and 115752 transitions. Second operand has 27 states, 27 states have (on average 12.814814814814815) internal successors, (346), 26 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:50:10,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:50:10,581 INFO L93 Difference]: Finished difference Result 151221 states and 186127 transitions. [2023-11-29 01:50:10,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 01:50:10,582 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 12.814814814814815) internal successors, (346), 26 states have internal predecessors, (346), 0 states have call successors, (0), 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 158 [2023-11-29 01:50:10,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:50:10,685 INFO L225 Difference]: With dead ends: 151221 [2023-11-29 01:50:10,685 INFO L226 Difference]: Without dead ends: 106535 [2023-11-29 01:50:10,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 300 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=456, Invalid=1524, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 01:50:10,702 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 15415 mSDsluCounter, 9460 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15415 SdHoareTripleChecker+Valid, 11009 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:50:10,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15415 Valid, 11009 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:50:10,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106535 states. [2023-11-29 01:50:18,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106535 to 94183. [2023-11-29 01:50:18,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94183 states, 94181 states have (on average 1.223750013272316) internal successors, (115254), 94182 states have internal predecessors, (115254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:50:18,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94183 states to 94183 states and 115254 transitions. [2023-11-29 01:50:18,318 INFO L78 Accepts]: Start accepts. Automaton has 94183 states and 115254 transitions. Word has length 158 [2023-11-29 01:50:18,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:50:18,319 INFO L495 AbstractCegarLoop]: Abstraction has 94183 states and 115254 transitions. [2023-11-29 01:50:18,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 12.814814814814815) internal successors, (346), 26 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:50:18,319 INFO L276 IsEmpty]: Start isEmpty. Operand 94183 states and 115254 transitions. [2023-11-29 01:50:18,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-29 01:50:18,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:50:18,333 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:50:18,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:50:18,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 01:50:18,534 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:50:18,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:50:18,534 INFO L85 PathProgramCache]: Analyzing trace with hash -141051032, now seen corresponding path program 1 times [2023-11-29 01:50:18,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:50:18,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970010388] [2023-11-29 01:50:18,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:18,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:50:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:50:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 47 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:50:19,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:50:19,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970010388] [2023-11-29 01:50:19,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970010388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:50:19,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859090802] [2023-11-29 01:50:19,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:19,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:50:19,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:50:19,209 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:50:19,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:50:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:50:19,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:50:19,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:50:20,539 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 27 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:50:20,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:50:23,082 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 21 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:50:23,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859090802] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:50:23,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:50:23,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2023-11-29 01:50:23,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684575189] [2023-11-29 01:50:23,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:50:23,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 01:50:23,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:50:23,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 01:50:23,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2023-11-29 01:50:23,085 INFO L87 Difference]: Start difference. First operand 94183 states and 115254 transitions. Second operand has 32 states, 32 states have (on average 14.09375) internal successors, (451), 31 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:50:37,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:50:37,367 INFO L93 Difference]: Finished difference Result 173685 states and 212464 transitions. [2023-11-29 01:50:37,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-11-29 01:50:37,368 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 14.09375) internal successors, (451), 31 states have internal predecessors, (451), 0 states have call successors, (0), 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 158 [2023-11-29 01:50:37,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:50:37,466 INFO L225 Difference]: With dead ends: 173685 [2023-11-29 01:50:37,466 INFO L226 Difference]: Without dead ends: 106975 [2023-11-29 01:50:37,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2153 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1750, Invalid=7756, Unknown=0, NotChecked=0, Total=9506 [2023-11-29 01:50:37,486 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 22113 mSDsluCounter, 15985 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22113 SdHoareTripleChecker+Valid, 17550 SdHoareTripleChecker+Invalid, 2091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:50:37,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22113 Valid, 17550 Invalid, 2091 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 2046 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 01:50:37,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106975 states. [2023-11-29 01:50:45,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106975 to 94183. [2023-11-29 01:50:45,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94183 states, 94181 states have (on average 1.2126968284473514) internal successors, (114213), 94182 states have internal predecessors, (114213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:50:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94183 states to 94183 states and 114213 transitions. [2023-11-29 01:50:45,558 INFO L78 Accepts]: Start accepts. Automaton has 94183 states and 114213 transitions. Word has length 158 [2023-11-29 01:50:45,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:50:45,558 INFO L495 AbstractCegarLoop]: Abstraction has 94183 states and 114213 transitions. [2023-11-29 01:50:45,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 14.09375) internal successors, (451), 31 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:50:45,558 INFO L276 IsEmpty]: Start isEmpty. Operand 94183 states and 114213 transitions. [2023-11-29 01:50:45,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-29 01:50:45,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:50:45,570 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:50:45,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:50:45,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:50:45,771 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:50:45,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:50:45,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1588420160, now seen corresponding path program 1 times [2023-11-29 01:50:45,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:50:45,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217724677] [2023-11-29 01:50:45,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:45,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:50:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:50:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 13 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:50:46,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:50:46,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217724677] [2023-11-29 01:50:46,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217724677] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:50:46,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672623425] [2023-11-29 01:50:46,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:50:46,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:50:46,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:50:46,581 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:50:46,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:50:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:50:46,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:50:46,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:50:47,996 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 21 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:50:47,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:50:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 13 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:50:50,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672623425] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:50:50,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:50:50,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2023-11-29 01:50:50,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135926165] [2023-11-29 01:50:50,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:50:50,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 01:50:50,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:50:50,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 01:50:50,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:50:50,400 INFO L87 Difference]: Start difference. First operand 94183 states and 114213 transitions. Second operand has 29 states, 29 states have (on average 14.172413793103448) internal successors, (411), 28 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:50:59,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:50:59,370 INFO L93 Difference]: Finished difference Result 145367 states and 176186 transitions. [2023-11-29 01:50:59,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 01:50:59,370 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 14.172413793103448) internal successors, (411), 28 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2023-11-29 01:50:59,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:50:59,447 INFO L225 Difference]: With dead ends: 145367 [2023-11-29 01:50:59,448 INFO L226 Difference]: Without dead ends: 94947 [2023-11-29 01:50:59,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 303 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=474, Invalid=1506, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 01:50:59,463 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 12034 mSDsluCounter, 11016 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12034 SdHoareTripleChecker+Valid, 12564 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:50:59,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12034 Valid, 12564 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:50:59,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94947 states. [2023-11-29 01:51:07,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94947 to 94183. [2023-11-29 01:51:07,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94183 states, 94181 states have (on average 1.2058164597955001) internal successors, (113565), 94182 states have internal predecessors, (113565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:07,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94183 states to 94183 states and 113565 transitions. [2023-11-29 01:51:07,981 INFO L78 Accepts]: Start accepts. Automaton has 94183 states and 113565 transitions. Word has length 160 [2023-11-29 01:51:07,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:51:07,982 INFO L495 AbstractCegarLoop]: Abstraction has 94183 states and 113565 transitions. [2023-11-29 01:51:07,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 14.172413793103448) internal successors, (411), 28 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:51:07,982 INFO L276 IsEmpty]: Start isEmpty. Operand 94183 states and 113565 transitions. [2023-11-29 01:51:07,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 01:51:07,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:51:07,993 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:51:07,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:51:08,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 01:51:08,194 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:51:08,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:51:08,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1928525644, now seen corresponding path program 1 times [2023-11-29 01:51:08,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:51:08,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595410750] [2023-11-29 01:51:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:08,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:51:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:51:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:51:09,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:51:09,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595410750] [2023-11-29 01:51:09,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595410750] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:51:09,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123080098] [2023-11-29 01:51:09,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:51:09,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:51:09,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:51:09,095 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:51:09,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:51:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:51:09,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 01:51:09,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:51:13,324 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:51:13,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:51:18,143 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:51:18,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123080098] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:51:18,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:51:18,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 22] total 62 [2023-11-29 01:51:18,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123352481] [2023-11-29 01:51:18,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:51:18,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-11-29 01:51:18,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:51:18,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-11-29 01:51:18,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=3431, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 01:51:18,145 INFO L87 Difference]: Start difference. First operand 94183 states and 113565 transitions. Second operand has 62 states, 62 states have (on average 7.580645161290323) internal successors, (470), 62 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:53:02,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:53:02,539 INFO L93 Difference]: Finished difference Result 422094 states and 505176 transitions. [2023-11-29 01:53:02,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 290 states. [2023-11-29 01:53:02,540 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 7.580645161290323) internal successors, (470), 62 states have internal predecessors, (470), 0 states have call successors, (0), 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 161 [2023-11-29 01:53:02,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:53:02,900 INFO L225 Difference]: With dead ends: 422094 [2023-11-29 01:53:02,900 INFO L226 Difference]: Without dead ends: 371974 [2023-11-29 01:53:02,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 280 SyntacticMatches, 1 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47846 ImplicationChecksByTransitivity, 61.9s TimeCoverageRelationStatistics Valid=17043, Invalid=103019, Unknown=0, NotChecked=0, Total=120062 [2023-11-29 01:53:02,938 INFO L413 NwaCegarLoop]: 1637 mSDtfsCounter, 25062 mSDsluCounter, 34173 mSDsCounter, 0 mSdLazyCounter, 6469 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25062 SdHoareTripleChecker+Valid, 35810 SdHoareTripleChecker+Invalid, 6715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 6469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:53:02,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25062 Valid, 35810 Invalid, 6715 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [246 Valid, 6469 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-11-29 01:53:03,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371974 states. [2023-11-29 01:53:32,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371974 to 277527. [2023-11-29 01:53:32,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277527 states, 277525 states have (on average 1.1992252950184668) internal successors, (332815), 277526 states have internal predecessors, (332815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:53:32,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277527 states to 277527 states and 332815 transitions. [2023-11-29 01:53:32,683 INFO L78 Accepts]: Start accepts. Automaton has 277527 states and 332815 transitions. Word has length 161 [2023-11-29 01:53:32,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:53:32,683 INFO L495 AbstractCegarLoop]: Abstraction has 277527 states and 332815 transitions. [2023-11-29 01:53:32,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 7.580645161290323) internal successors, (470), 62 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:53:32,683 INFO L276 IsEmpty]: Start isEmpty. Operand 277527 states and 332815 transitions. [2023-11-29 01:53:32,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 01:53:32,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:53:32,696 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:53:32,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:53:32,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:53:32,897 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:53:32,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:53:32,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1529782256, now seen corresponding path program 1 times [2023-11-29 01:53:32,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:53:32,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361388087] [2023-11-29 01:53:32,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:53:32,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:53:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:34,787 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 41 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:53:34,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:53:34,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361388087] [2023-11-29 01:53:34,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361388087] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:53:34,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174764529] [2023-11-29 01:53:34,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:53:34,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:53:34,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:53:34,789 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:53:34,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:53:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:53:34,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 01:53:34,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:53:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 41 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:53:36,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:53:40,475 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 41 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:53:40,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174764529] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:53:40,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:53:40,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 53 [2023-11-29 01:53:40,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175614903] [2023-11-29 01:53:40,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:53:40,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-29 01:53:40,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:53:40,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-29 01:53:40,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=2498, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 01:53:40,477 INFO L87 Difference]: Start difference. First operand 277527 states and 332815 transitions. Second operand has 53 states, 53 states have (on average 8.264150943396226) internal successors, (438), 53 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:54:35,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:54:35,886 INFO L93 Difference]: Finished difference Result 557704 states and 667566 transitions. [2023-11-29 01:54:35,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-29 01:54:35,887 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 8.264150943396226) internal successors, (438), 53 states have internal predecessors, (438), 0 states have call successors, (0), 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 161 [2023-11-29 01:54:35,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:54:36,642 INFO L225 Difference]: With dead ends: 557704 [2023-11-29 01:54:36,642 INFO L226 Difference]: Without dead ends: 479527 [2023-11-29 01:54:36,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3435 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=2410, Invalid=11870, Unknown=0, NotChecked=0, Total=14280 [2023-11-29 01:54:36,741 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 20244 mSDsluCounter, 28970 mSDsCounter, 0 mSdLazyCounter, 2627 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20244 SdHoareTripleChecker+Valid, 30569 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:54:36,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20244 Valid, 30569 Invalid, 2775 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [148 Valid, 2627 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 01:54:37,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479527 states. [2023-11-29 01:55:19,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479527 to 345943. [2023-11-29 01:55:19,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345943 states, 345941 states have (on average 1.1950823984436652) internal successors, (413428), 345942 states have internal predecessors, (413428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:20,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345943 states to 345943 states and 413428 transitions. [2023-11-29 01:55:20,541 INFO L78 Accepts]: Start accepts. Automaton has 345943 states and 413428 transitions. Word has length 161 [2023-11-29 01:55:20,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:55:20,541 INFO L495 AbstractCegarLoop]: Abstraction has 345943 states and 413428 transitions. [2023-11-29 01:55:20,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 8.264150943396226) internal successors, (438), 53 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:55:20,541 INFO L276 IsEmpty]: Start isEmpty. Operand 345943 states and 413428 transitions. [2023-11-29 01:55:20,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 01:55:20,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:55:20,563 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:55:20,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 01:55:20,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:20,764 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:55:20,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:55:20,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1376254132, now seen corresponding path program 1 times [2023-11-29 01:55:20,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:55:20,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529316679] [2023-11-29 01:55:20,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:20,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:55:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:22,920 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:55:22,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:55:22,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529316679] [2023-11-29 01:55:22,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529316679] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:55:22,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421465951] [2023-11-29 01:55:22,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:55:22,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:55:22,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:55:22,921 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:55:22,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5734dbfb-d76d-4c94-9921-ef76f98ecc5e/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:55:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:55:23,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 01:55:23,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:55:26,407 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:55:26,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:55:33,790 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:55:33,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421465951] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:55:33,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:55:33,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 69 [2023-11-29 01:55:33,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618474279] [2023-11-29 01:55:33,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:55:33,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-11-29 01:55:33,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:55:33,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-11-29 01:55:33,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=4320, Unknown=0, NotChecked=0, Total=4692 [2023-11-29 01:55:33,793 INFO L87 Difference]: Start difference. First operand 345943 states and 413428 transitions. Second operand has 69 states, 69 states have (on average 6.202898550724638) internal successors, (428), 69 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)