./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f72ba4-7347-46f9-987c-b45dfa41dc11/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f72ba4-7347-46f9-987c-b45dfa41dc11/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f72ba4-7347-46f9-987c-b45dfa41dc11/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f72ba4-7347-46f9-987c-b45dfa41dc11/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f72ba4-7347-46f9-987c-b45dfa41dc11/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f72ba4-7347-46f9-987c-b45dfa41dc11/bin/uautomizer-verify-uTZkv6EMXl --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 d42acf3cb6fb09e95e469565b0da99b6a16454e110f96f4933b2c74117d179ab --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:31:23,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:31:23,625 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f72ba4-7347-46f9-987c-b45dfa41dc11/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:31:23,634 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:31:23,635 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:31:23,683 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:31:23,684 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:31:23,685 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:31:23,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:31:23,693 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:31:23,695 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:31:23,696 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:31:23,697 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:31:23,699 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:31:23,700 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:31:23,700 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:31:23,701 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:31:23,701 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:31:23,702 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:31:23,703 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:31:23,703 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:31:23,704 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:31:23,705 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:31:23,705 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:31:23,706 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:31:23,707 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:31:23,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:31:23,708 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:31:23,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:31:23,710 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:31:23,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:31:23,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:31:23,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:31:23,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:31:23,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:31:23,713 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:31:23,714 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:31:23,714 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:31:23,714 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:31:23,715 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_f1f72ba4-7347-46f9-987c-b45dfa41dc11/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f72ba4-7347-46f9-987c-b45dfa41dc11/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d42acf3cb6fb09e95e469565b0da99b6a16454e110f96f4933b2c74117d179ab [2023-11-12 02:31:24,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:31:24,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:31:24,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:31:24,181 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:31:24,181 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:31:24,183 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f72ba4-7347-46f9-987c-b45dfa41dc11/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-11-12 02:31:27,564 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:31:28,263 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:31:28,263 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f72ba4-7347-46f9-987c-b45dfa41dc11/sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-11-12 02:31:28,313 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f72ba4-7347-46f9-987c-b45dfa41dc11/bin/uautomizer-verify-uTZkv6EMXl/data/bf9b1c1e5/6b05f9d85235485bb13bdeba0f6e9be9/FLAG9ca9d885c [2023-11-12 02:31:28,334 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f72ba4-7347-46f9-987c-b45dfa41dc11/bin/uautomizer-verify-uTZkv6EMXl/data/bf9b1c1e5/6b05f9d85235485bb13bdeba0f6e9be9 [2023-11-12 02:31:28,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:31:28,344 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:31:28,347 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:31:28,348 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:31:28,355 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:31:28,356 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:31:28" (1/1) ... [2023-11-12 02:31:28,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46511671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:28, skipping insertion in model container [2023-11-12 02:31:28,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:31:28" (1/1) ... [2023-11-12 02:31:28,531 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:31:29,086 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_f1f72ba4-7347-46f9-987c-b45dfa41dc11/sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[26962,26975] [2023-11-12 02:31:29,173 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_f1f72ba4-7347-46f9-987c-b45dfa41dc11/sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[32517,32530] [2023-11-12 02:31:30,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:31:30,180 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:31:30,253 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_f1f72ba4-7347-46f9-987c-b45dfa41dc11/sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[26962,26975] [2023-11-12 02:31:30,274 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_f1f72ba4-7347-46f9-987c-b45dfa41dc11/sv-benchmarks/c/combinations/pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[32517,32530] [2023-11-12 02:31:30,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:31:30,910 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:31:30,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:30 WrapperNode [2023-11-12 02:31:30,911 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:31:30,912 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:31:30,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:31:30,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:31:30,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:30" (1/1) ... [2023-11-12 02:31:31,040 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:30" (1/1) ... [2023-11-12 02:31:31,309 INFO L138 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5280 [2023-11-12 02:31:31,310 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:31:31,405 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:31:31,405 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:31:31,405 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:31:31,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:30" (1/1) ... [2023-11-12 02:31:31,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:30" (1/1) ... [2023-11-12 02:31:31,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:30" (1/1) ... [2023-11-12 02:31:31,487 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:30" (1/1) ... [2023-11-12 02:31:31,695 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:30" (1/1) ... [2023-11-12 02:31:31,800 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:30" (1/1) ... [2023-11-12 02:31:31,852 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:30" (1/1) ... [2023-11-12 02:31:31,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:30" (1/1) ... [2023-11-12 02:31:31,983 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:31:31,984 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:31:31,985 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:31:31,985 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:31:31,986 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:30" (1/1) ... [2023-11-12 02:31:31,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:31:32,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f72ba4-7347-46f9-987c-b45dfa41dc11/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:31:32,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f72ba4-7347-46f9-987c-b45dfa41dc11/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:31:32,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1f72ba4-7347-46f9-987c-b45dfa41dc11/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:31:32,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:31:32,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:31:32,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:31:32,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:31:32,254 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:31:32,257 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:31:38,474 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:31:38,504 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:31:38,505 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:31:38,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:31:38 BoogieIcfgContainer [2023-11-12 02:31:38,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:31:38,516 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:31:38,516 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:31:38,520 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:31:38,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:31:28" (1/3) ... [2023-11-12 02:31:38,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be52566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:31:38, skipping insertion in model container [2023-11-12 02:31:38,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:30" (2/3) ... [2023-11-12 02:31:38,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be52566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:31:38, skipping insertion in model container [2023-11-12 02:31:38,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:31:38" (3/3) ... [2023-11-12 02:31:38,526 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-11-12 02:31:38,551 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:31:38,552 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:31:38,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:31:38,683 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;@71806382, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:31:38,683 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 02:31:38,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 947 states, 944 states have (on average 1.9036016949152543) internal successors, (1797), 946 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:38,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-12 02:31:38,712 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:38,713 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] [2023-11-12 02:31:38,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:38,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:38,722 INFO L85 PathProgramCache]: Analyzing trace with hash -60564882, now seen corresponding path program 1 times [2023-11-12 02:31:38,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:38,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704042515] [2023-11-12 02:31:38,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:38,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:39,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:31:39,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:39,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704042515] [2023-11-12 02:31:39,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704042515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:39,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:39,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:31:39,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595000362] [2023-11-12 02:31:39,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:39,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:31:39,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:39,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:31:39,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:31:39,369 INFO L87 Difference]: Start difference. First operand has 947 states, 944 states have (on average 1.9036016949152543) internal successors, (1797), 946 states have internal predecessors, (1797), 0 states have call successors, (0), 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:39,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:39,515 INFO L93 Difference]: Finished difference Result 1825 states and 3462 transitions. [2023-11-12 02:31:39,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:31:39,517 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2023-11-12 02:31:39,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:39,550 INFO L225 Difference]: With dead ends: 1825 [2023-11-12 02:31:39,551 INFO L226 Difference]: Without dead ends: 881 [2023-11-12 02:31:39,565 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 [2023-11-12 02:31:39,571 INFO L413 NwaCegarLoop]: 1728 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:39,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1728 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:31:39,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2023-11-12 02:31:39,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 881. [2023-11-12 02:31:39,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 879 states have (on average 1.8930602957906713) internal successors, (1664), 880 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:39,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1664 transitions. [2023-11-12 02:31:39,728 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1664 transitions. Word has length 30 [2023-11-12 02:31:39,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:39,729 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1664 transitions. [2023-11-12 02:31:39,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:39,729 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1664 transitions. [2023-11-12 02:31:39,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-12 02:31:39,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:39,738 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] [2023-11-12 02:31:39,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:31:39,739 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:39,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:39,741 INFO L85 PathProgramCache]: Analyzing trace with hash -194578388, now seen corresponding path program 1 times [2023-11-12 02:31:39,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:39,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353100554] [2023-11-12 02:31:39,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:39,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:31:40,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:40,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353100554] [2023-11-12 02:31:40,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353100554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:40,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:40,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:31:40,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500781459] [2023-11-12 02:31:40,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:40,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:31:40,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:40,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:31:40,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:31:40,119 INFO L87 Difference]: Start difference. First operand 881 states and 1664 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:40,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:40,325 INFO L93 Difference]: Finished difference Result 945 states and 1765 transitions. [2023-11-12 02:31:40,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:31:40,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2023-11-12 02:31:40,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:40,333 INFO L225 Difference]: With dead ends: 945 [2023-11-12 02:31:40,334 INFO L226 Difference]: Without dead ends: 881 [2023-11-12 02:31:40,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:31:40,337 INFO L413 NwaCegarLoop]: 1662 mSDtfsCounter, 2 mSDsluCounter, 4920 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6582 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:40,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6582 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:31:40,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2023-11-12 02:31:40,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 881. [2023-11-12 02:31:40,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 879 states have (on average 1.8236632536973834) internal successors, (1603), 880 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:40,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1603 transitions. [2023-11-12 02:31:40,373 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1603 transitions. Word has length 30 [2023-11-12 02:31:40,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:40,374 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1603 transitions. [2023-11-12 02:31:40,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:40,375 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1603 transitions. [2023-11-12 02:31:40,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-12 02:31:40,378 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:40,379 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] [2023-11-12 02:31:40,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:31:40,380 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:40,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:40,388 INFO L85 PathProgramCache]: Analyzing trace with hash -832710315, now seen corresponding path program 1 times [2023-11-12 02:31:40,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:40,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874098340] [2023-11-12 02:31:40,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:40,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:31:40,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:40,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874098340] [2023-11-12 02:31:40,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874098340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:40,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:40,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:31:40,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977049550] [2023-11-12 02:31:40,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:40,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:40,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:40,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:40,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:40,660 INFO L87 Difference]: Start difference. First operand 881 states and 1603 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:46,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:46,780 INFO L93 Difference]: Finished difference Result 2385 states and 4476 transitions. [2023-11-12 02:31:46,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:46,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2023-11-12 02:31:46,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:46,798 INFO L225 Difference]: With dead ends: 2385 [2023-11-12 02:31:46,799 INFO L226 Difference]: Without dead ends: 1632 [2023-11-12 02:31:46,801 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 [2023-11-12 02:31:46,803 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 931 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:46,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 241 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-12 02:31:46,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-11-12 02:31:46,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1632. [2023-11-12 02:31:46,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1630 states have (on average 1.826993865030675) internal successors, (2978), 1631 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2978 transitions. [2023-11-12 02:31:46,877 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2978 transitions. Word has length 48 [2023-11-12 02:31:46,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:46,878 INFO L495 AbstractCegarLoop]: Abstraction has 1632 states and 2978 transitions. [2023-11-12 02:31:46,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:46,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2978 transitions. [2023-11-12 02:31:46,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 02:31:46,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:46,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:46,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:31:46,884 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:46,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:46,885 INFO L85 PathProgramCache]: Analyzing trace with hash 255619932, now seen corresponding path program 1 times [2023-11-12 02:31:46,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:46,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488381378] [2023-11-12 02:31:46,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:46,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:47,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:31:47,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:47,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488381378] [2023-11-12 02:31:47,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488381378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:47,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:47,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-12 02:31:47,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079456545] [2023-11-12 02:31:47,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:47,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:31:47,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:47,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:31:47,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:31:47,384 INFO L87 Difference]: Start difference. First operand 1632 states and 2978 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:48,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:48,369 INFO L93 Difference]: Finished difference Result 2592 states and 4530 transitions. [2023-11-12 02:31:48,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-12 02:31:48,370 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-11-12 02:31:48,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:48,391 INFO L225 Difference]: With dead ends: 2592 [2023-11-12 02:31:48,392 INFO L226 Difference]: Without dead ends: 2532 [2023-11-12 02:31:48,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-11-12 02:31:48,406 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 13373 mSDsluCounter, 4789 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13373 SdHoareTripleChecker+Valid, 6388 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:48,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13373 Valid, 6388 Invalid, 374 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:31:48,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2023-11-12 02:31:48,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 1690. [2023-11-12 02:31:48,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1688 states have (on average 1.819905213270142) internal successors, (3072), 1689 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:48,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3072 transitions. [2023-11-12 02:31:48,486 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3072 transitions. Word has length 90 [2023-11-12 02:31:48,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:48,489 INFO L495 AbstractCegarLoop]: Abstraction has 1690 states and 3072 transitions. [2023-11-12 02:31:48,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:48,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3072 transitions. [2023-11-12 02:31:48,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-12 02:31:48,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:48,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:48,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:31:48,494 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:48,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:48,494 INFO L85 PathProgramCache]: Analyzing trace with hash -578069748, now seen corresponding path program 1 times [2023-11-12 02:31:48,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:48,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818547552] [2023-11-12 02:31:48,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:48,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:48,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:31:48,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:48,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818547552] [2023-11-12 02:31:48,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818547552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:48,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:48,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:31:48,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941078919] [2023-11-12 02:31:48,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:48,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:48,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:48,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:48,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:48,805 INFO L87 Difference]: Start difference. First operand 1690 states and 3072 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) 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) [2023-11-12 02:31:48,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:48,876 INFO L93 Difference]: Finished difference Result 1915 states and 3435 transitions. [2023-11-12 02:31:48,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:48,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) 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 [2023-11-12 02:31:48,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:48,895 INFO L225 Difference]: With dead ends: 1915 [2023-11-12 02:31:48,895 INFO L226 Difference]: Without dead ends: 1797 [2023-11-12 02:31:48,897 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 [2023-11-12 02:31:48,901 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 1506 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1693 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 [2023-11-12 02:31:48,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1693 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:31:48,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2023-11-12 02:31:48,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1795. [2023-11-12 02:31:48,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1793 states have (on average 1.8070273284997211) internal successors, (3240), 1794 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:48,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 3240 transitions. [2023-11-12 02:31:48,971 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 3240 transitions. Word has length 92 [2023-11-12 02:31:48,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:48,972 INFO L495 AbstractCegarLoop]: Abstraction has 1795 states and 3240 transitions. [2023-11-12 02:31:48,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) 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) [2023-11-12 02:31:48,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 3240 transitions. [2023-11-12 02:31:48,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-12 02:31:48,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:48,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:48,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:31:48,976 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:48,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:48,977 INFO L85 PathProgramCache]: Analyzing trace with hash -511576236, now seen corresponding path program 1 times [2023-11-12 02:31:48,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:48,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379253117] [2023-11-12 02:31:48,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:48,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:31:49,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:49,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379253117] [2023-11-12 02:31:49,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379253117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:49,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:49,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-12 02:31:49,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576176393] [2023-11-12 02:31:49,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:49,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:31:49,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:49,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:31:49,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:31:49,829 INFO L87 Difference]: Start difference. First operand 1795 states and 3240 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 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) [2023-11-12 02:31:50,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:50,673 INFO L93 Difference]: Finished difference Result 2020 states and 3600 transitions. [2023-11-12 02:31:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:31:50,676 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 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 [2023-11-12 02:31:50,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:50,699 INFO L225 Difference]: With dead ends: 2020 [2023-11-12 02:31:50,699 INFO L226 Difference]: Without dead ends: 1797 [2023-11-12 02:31:50,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:31:50,701 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 6108 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6108 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:50,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6108 Valid, 2254 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:31:50,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2023-11-12 02:31:50,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1795. [2023-11-12 02:31:50,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1793 states have (on average 1.8059118795315114) internal successors, (3238), 1794 states have internal predecessors, (3238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:50,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 3238 transitions. [2023-11-12 02:31:50,834 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 3238 transitions. Word has length 92 [2023-11-12 02:31:50,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:50,836 INFO L495 AbstractCegarLoop]: Abstraction has 1795 states and 3238 transitions. [2023-11-12 02:31:50,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 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) [2023-11-12 02:31:50,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 3238 transitions. [2023-11-12 02:31:50,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-12 02:31:50,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:50,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:50,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:31:50,851 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:50,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:50,852 INFO L85 PathProgramCache]: Analyzing trace with hash 906283047, now seen corresponding path program 1 times [2023-11-12 02:31:50,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:50,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364967767] [2023-11-12 02:31:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:50,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:51,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:31:51,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:51,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364967767] [2023-11-12 02:31:51,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364967767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:51,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:51,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:31:51,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716806284] [2023-11-12 02:31:51,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:51,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:31:51,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:51,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:31:51,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:31:51,288 INFO L87 Difference]: Start difference. First operand 1795 states and 3238 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 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) [2023-11-12 02:31:51,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:51,389 INFO L93 Difference]: Finished difference Result 1986 states and 3547 transitions. [2023-11-12 02:31:51,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:31:51,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 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 [2023-11-12 02:31:51,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:51,405 INFO L225 Difference]: With dead ends: 1986 [2023-11-12 02:31:51,405 INFO L226 Difference]: Without dead ends: 1984 [2023-11-12 02:31:51,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:31:51,407 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 85 mSDsluCounter, 4953 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 6634 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:51,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 6634 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:31:51,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2023-11-12 02:31:51,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1801. [2023-11-12 02:31:51,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1799 states have (on average 1.802668148971651) internal successors, (3243), 1800 states have internal predecessors, (3243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:51,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 3243 transitions. [2023-11-12 02:31:51,469 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 3243 transitions. Word has length 93 [2023-11-12 02:31:51,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:51,470 INFO L495 AbstractCegarLoop]: Abstraction has 1801 states and 3243 transitions. [2023-11-12 02:31:51,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 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) [2023-11-12 02:31:51,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 3243 transitions. [2023-11-12 02:31:51,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-12 02:31:51,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:51,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:51,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:31:51,473 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:51,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:51,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1719553388, now seen corresponding path program 1 times [2023-11-12 02:31:51,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:51,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824833446] [2023-11-12 02:31:51,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:51,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:51,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:31:51,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:51,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824833446] [2023-11-12 02:31:51,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824833446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:51,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:51,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:31:51,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248872956] [2023-11-12 02:31:51,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:51,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:51,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:51,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:51,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:51,603 INFO L87 Difference]: Start difference. First operand 1801 states and 3243 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:51,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:51,662 INFO L93 Difference]: Finished difference Result 2043 states and 3624 transitions. [2023-11-12 02:31:51,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:51,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2023-11-12 02:31:51,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:51,678 INFO L225 Difference]: With dead ends: 2043 [2023-11-12 02:31:51,678 INFO L226 Difference]: Without dead ends: 1919 [2023-11-12 02:31:51,679 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 [2023-11-12 02:31:51,680 INFO L413 NwaCegarLoop]: 1685 mSDtfsCounter, 1526 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:51,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1783 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:31:51,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2023-11-12 02:31:51,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1917. [2023-11-12 02:31:51,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1915 states have (on average 1.7879895561357702) internal successors, (3424), 1916 states have internal predecessors, (3424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:51,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 3424 transitions. [2023-11-12 02:31:51,750 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 3424 transitions. Word has length 94 [2023-11-12 02:31:51,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:51,750 INFO L495 AbstractCegarLoop]: Abstraction has 1917 states and 3424 transitions. [2023-11-12 02:31:51,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 3424 transitions. [2023-11-12 02:31:51,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-12 02:31:51,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:51,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:51,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:31:51,753 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:51,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:51,754 INFO L85 PathProgramCache]: Analyzing trace with hash 593433492, now seen corresponding path program 1 times [2023-11-12 02:31:51,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:51,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377383335] [2023-11-12 02:31:51,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:51,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:51,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:31:51,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:51,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377383335] [2023-11-12 02:31:51,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377383335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:51,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:51,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:31:51,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101238604] [2023-11-12 02:31:51,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:51,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:51,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:51,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:51,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:51,886 INFO L87 Difference]: Start difference. First operand 1917 states and 3424 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:51,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:51,956 INFO L93 Difference]: Finished difference Result 2579 states and 4464 transitions. [2023-11-12 02:31:51,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:51,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2023-11-12 02:31:51,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:51,975 INFO L225 Difference]: With dead ends: 2579 [2023-11-12 02:31:51,976 INFO L226 Difference]: Without dead ends: 2236 [2023-11-12 02:31:51,977 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 [2023-11-12 02:31:51,980 INFO L413 NwaCegarLoop]: 1687 mSDtfsCounter, 1524 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:51,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1789 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:31:51,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2023-11-12 02:31:52,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 2234. [2023-11-12 02:31:52,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2234 states, 2232 states have (on average 1.7544802867383513) internal successors, (3916), 2233 states have internal predecessors, (3916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:52,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 3916 transitions. [2023-11-12 02:31:52,064 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 3916 transitions. Word has length 94 [2023-11-12 02:31:52,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:52,064 INFO L495 AbstractCegarLoop]: Abstraction has 2234 states and 3916 transitions. [2023-11-12 02:31:52,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:52,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 3916 transitions. [2023-11-12 02:31:52,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-12 02:31:52,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:52,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:52,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:31:52,067 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:52,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:52,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1596549740, now seen corresponding path program 1 times [2023-11-12 02:31:52,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:52,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686558970] [2023-11-12 02:31:52,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:52,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:52,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:31:52,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:52,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686558970] [2023-11-12 02:31:52,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686558970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:52,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:52,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:31:52,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394014835] [2023-11-12 02:31:52,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:52,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:52,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:52,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:52,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:52,195 INFO L87 Difference]: Start difference. First operand 2234 states and 3916 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:52,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:52,285 INFO L93 Difference]: Finished difference Result 3506 states and 5898 transitions. [2023-11-12 02:31:52,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:52,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2023-11-12 02:31:52,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:52,302 INFO L225 Difference]: With dead ends: 3506 [2023-11-12 02:31:52,303 INFO L226 Difference]: Without dead ends: 2846 [2023-11-12 02:31:52,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:52,305 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 1520 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:52,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1785 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:31:52,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2023-11-12 02:31:52,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2844. [2023-11-12 02:31:52,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2842 states have (on average 1.7072484166080226) internal successors, (4852), 2843 states have internal predecessors, (4852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:52,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 4852 transitions. [2023-11-12 02:31:52,463 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 4852 transitions. Word has length 94 [2023-11-12 02:31:52,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:52,464 INFO L495 AbstractCegarLoop]: Abstraction has 2844 states and 4852 transitions. [2023-11-12 02:31:52,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:52,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 4852 transitions. [2023-11-12 02:31:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-12 02:31:52,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:52,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:52,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:31:52,467 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:52,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:52,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1332693356, now seen corresponding path program 1 times [2023-11-12 02:31:52,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:52,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233971750] [2023-11-12 02:31:52,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:52,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:52,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:31:52,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:52,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233971750] [2023-11-12 02:31:52,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233971750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:52,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:52,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:31:52,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043580399] [2023-11-12 02:31:52,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:52,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:52,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:52,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:52,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:52,648 INFO L87 Difference]: Start difference. First operand 2844 states and 4852 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:52,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:52,773 INFO L93 Difference]: Finished difference Result 5288 states and 8622 transitions. [2023-11-12 02:31:52,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:52,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2023-11-12 02:31:52,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:52,827 INFO L225 Difference]: With dead ends: 5288 [2023-11-12 02:31:52,828 INFO L226 Difference]: Without dead ends: 4018 [2023-11-12 02:31:52,833 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 [2023-11-12 02:31:52,836 INFO L413 NwaCegarLoop]: 1673 mSDtfsCounter, 1518 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:52,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 1787 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:31:52,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4018 states. [2023-11-12 02:31:52,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4018 to 4016. [2023-11-12 02:31:53,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4016 states, 4014 states have (on average 1.6512207274539112) internal successors, (6628), 4015 states have internal predecessors, (6628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:53,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 6628 transitions. [2023-11-12 02:31:53,042 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 6628 transitions. Word has length 94 [2023-11-12 02:31:53,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:53,043 INFO L495 AbstractCegarLoop]: Abstraction has 4016 states and 6628 transitions. [2023-11-12 02:31:53,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:53,044 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 6628 transitions. [2023-11-12 02:31:53,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-12 02:31:53,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:53,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:53,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:31:53,046 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:53,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:53,047 INFO L85 PathProgramCache]: Analyzing trace with hash -94431340, now seen corresponding path program 1 times [2023-11-12 02:31:53,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:53,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518296342] [2023-11-12 02:31:53,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:53,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:31:53,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:53,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518296342] [2023-11-12 02:31:53,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518296342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:53,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:53,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:31:53,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21067936] [2023-11-12 02:31:53,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:53,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:53,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:53,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:53,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:53,193 INFO L87 Difference]: Start difference. First operand 4016 states and 6628 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:53,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:53,392 INFO L93 Difference]: Finished difference Result 8708 states and 13782 transitions. [2023-11-12 02:31:53,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:53,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2023-11-12 02:31:53,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:53,408 INFO L225 Difference]: With dead ends: 8708 [2023-11-12 02:31:53,408 INFO L226 Difference]: Without dead ends: 6266 [2023-11-12 02:31:53,413 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 [2023-11-12 02:31:53,414 INFO L413 NwaCegarLoop]: 1671 mSDtfsCounter, 1516 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:53,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1789 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:31:53,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2023-11-12 02:31:53,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 6264. [2023-11-12 02:31:53,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6264 states, 6262 states have (on average 1.5950175662727564) internal successors, (9988), 6263 states have internal predecessors, (9988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:53,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6264 states to 6264 states and 9988 transitions. [2023-11-12 02:31:53,707 INFO L78 Accepts]: Start accepts. Automaton has 6264 states and 9988 transitions. Word has length 94 [2023-11-12 02:31:53,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:53,708 INFO L495 AbstractCegarLoop]: Abstraction has 6264 states and 9988 transitions. [2023-11-12 02:31:53,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:53,709 INFO L276 IsEmpty]: Start isEmpty. Operand 6264 states and 9988 transitions. [2023-11-12 02:31:53,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-12 02:31:53,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:53,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:53,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:31:53,711 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:53,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:53,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1985067156, now seen corresponding path program 1 times [2023-11-12 02:31:53,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:53,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79037517] [2023-11-12 02:31:53,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:53,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:53,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:31:53,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:53,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79037517] [2023-11-12 02:31:53,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79037517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:53,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:53,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:31:53,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343500201] [2023-11-12 02:31:53,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:53,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:53,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:53,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:53,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:53,835 INFO L87 Difference]: Start difference. First operand 6264 states and 9988 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:54,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:54,413 INFO L93 Difference]: Finished difference Result 15260 states and 23526 transitions. [2023-11-12 02:31:54,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:54,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2023-11-12 02:31:54,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:54,444 INFO L225 Difference]: With dead ends: 15260 [2023-11-12 02:31:54,444 INFO L226 Difference]: Without dead ends: 10570 [2023-11-12 02:31:54,454 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 [2023-11-12 02:31:54,456 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 1514 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:54,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1791 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:31:54,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10570 states. [2023-11-12 02:31:54,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10570 to 10568. [2023-11-12 02:31:54,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10568 states, 10566 states have (on average 1.5449555176982774) internal successors, (16324), 10567 states have internal predecessors, (16324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:55,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10568 states to 10568 states and 16324 transitions. [2023-11-12 02:31:55,030 INFO L78 Accepts]: Start accepts. Automaton has 10568 states and 16324 transitions. Word has length 94 [2023-11-12 02:31:55,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:55,031 INFO L495 AbstractCegarLoop]: Abstraction has 10568 states and 16324 transitions. [2023-11-12 02:31:55,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:55,031 INFO L276 IsEmpty]: Start isEmpty. Operand 10568 states and 16324 transitions. [2023-11-12 02:31:55,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-12 02:31:55,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:55,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:55,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:31:55,033 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:55,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:55,034 INFO L85 PathProgramCache]: Analyzing trace with hash -528967276, now seen corresponding path program 1 times [2023-11-12 02:31:55,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:55,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034535989] [2023-11-12 02:31:55,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:55,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:31:55,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:55,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034535989] [2023-11-12 02:31:55,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034535989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:55,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:55,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:31:55,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143353896] [2023-11-12 02:31:55,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:55,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:55,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:55,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:55,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:55,187 INFO L87 Difference]: Start difference. First operand 10568 states and 16324 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:55,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:55,908 INFO L93 Difference]: Finished difference Result 27788 states and 41862 transitions. [2023-11-12 02:31:55,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:55,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2023-11-12 02:31:55,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:55,955 INFO L225 Difference]: With dead ends: 27788 [2023-11-12 02:31:55,955 INFO L226 Difference]: Without dead ends: 18794 [2023-11-12 02:31:55,970 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 [2023-11-12 02:31:55,971 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1512 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:55,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1793 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:31:55,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18794 states. [2023-11-12 02:31:56,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18794 to 18792. [2023-11-12 02:31:56,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18792 states, 18790 states have (on average 1.502288451303885) internal successors, (28228), 18791 states have internal predecessors, (28228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18792 states to 18792 states and 28228 transitions. [2023-11-12 02:31:56,886 INFO L78 Accepts]: Start accepts. Automaton has 18792 states and 28228 transitions. Word has length 94 [2023-11-12 02:31:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:31:56,886 INFO L495 AbstractCegarLoop]: Abstraction has 18792 states and 28228 transitions. [2023-11-12 02:31:56,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:56,887 INFO L276 IsEmpty]: Start isEmpty. Operand 18792 states and 28228 transitions. [2023-11-12 02:31:56,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-12 02:31:56,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:31:56,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:31:56,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:31:56,889 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:31:56,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:56,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1759464300, now seen corresponding path program 1 times [2023-11-12 02:31:56,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:56,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522395840] [2023-11-12 02:31:56,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:56,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:31:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:31:57,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:31:57,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522395840] [2023-11-12 02:31:57,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522395840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:31:57,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:31:57,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:31:57,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036731842] [2023-11-12 02:31:57,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:31:57,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:31:57,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:31:57,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:31:57,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:31:57,101 INFO L87 Difference]: Start difference. First operand 18792 states and 28228 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:58,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:31:58,402 INFO L93 Difference]: Finished difference Result 51692 states and 76230 transitions. [2023-11-12 02:31:58,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:31:58,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 [2023-11-12 02:31:58,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:31:58,476 INFO L225 Difference]: With dead ends: 51692 [2023-11-12 02:31:58,476 INFO L226 Difference]: Without dead ends: 34474 [2023-11-12 02:31:58,496 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 [2023-11-12 02:31:58,497 INFO L413 NwaCegarLoop]: 1685 mSDtfsCounter, 1522 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:31:58,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1791 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:31:58,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34474 states. [2023-11-12 02:32:00,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34474 to 34472. [2023-11-12 02:32:00,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34472 states, 34470 states have (on average 1.4650420655642589) internal successors, (50500), 34471 states have internal predecessors, (50500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:00,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34472 states to 34472 states and 50500 transitions. [2023-11-12 02:32:00,446 INFO L78 Accepts]: Start accepts. Automaton has 34472 states and 50500 transitions. Word has length 94 [2023-11-12 02:32:00,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:00,446 INFO L495 AbstractCegarLoop]: Abstraction has 34472 states and 50500 transitions. [2023-11-12 02:32:00,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:00,447 INFO L276 IsEmpty]: Start isEmpty. Operand 34472 states and 50500 transitions. [2023-11-12 02:32:00,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-12 02:32:00,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:00,460 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:00,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:32:00,461 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:00,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:00,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1733023753, now seen corresponding path program 1 times [2023-11-12 02:32:00,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:00,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020499895] [2023-11-12 02:32:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:00,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:00,998 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:32:00,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:00,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020499895] [2023-11-12 02:32:00,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020499895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:00,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:01,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-12 02:32:01,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033105657] [2023-11-12 02:32:01,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:01,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:32:01,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:01,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:32:01,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:32:01,002 INFO L87 Difference]: Start difference. First operand 34472 states and 50500 transitions. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:08,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:08,908 INFO L93 Difference]: Finished difference Result 294458 states and 426573 transitions. [2023-11-12 02:32:08,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:32:08,909 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2023-11-12 02:32:08,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted.