./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2046fa69fcebe8f4159e2d29632b696c65fee77505bcacf51c3fef7658ce336a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:44:33,619 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:44:33,681 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:44:33,685 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:44:33,685 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:44:33,708 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:44:33,708 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:44:33,709 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:44:33,710 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:44:33,710 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:44:33,710 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:44:33,711 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:44:33,712 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:44:33,712 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:44:33,713 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:44:33,713 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:44:33,714 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:44:33,714 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:44:33,714 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:44:33,715 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:44:33,715 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:44:33,716 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:44:33,716 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:44:33,717 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:44:33,717 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:44:33,717 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:44:33,718 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:44:33,718 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:44:33,718 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:44:33,719 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:44:33,719 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:44:33,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:44:33,720 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:44:33,720 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:44:33,720 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:44:33,720 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:44:33,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:44:33,721 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:44:33,721 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:44:33,721 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:44:33,721 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:44:33,722 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:44:33,722 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_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2046fa69fcebe8f4159e2d29632b696c65fee77505bcacf51c3fef7658ce336a [2023-11-29 00:44:33,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:44:33,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:44:33,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:44:33,958 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:44:33,958 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:44:33,959 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label02.c [2023-11-29 00:44:36,733 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:44:37,180 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:44:37,180 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label02.c [2023-11-29 00:44:37,221 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/data/35597103e/38c66ba0ed0346bebdcd7958987cc50e/FLAG3666963d6 [2023-11-29 00:44:37,235 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/data/35597103e/38c66ba0ed0346bebdcd7958987cc50e [2023-11-29 00:44:37,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:44:37,239 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:44:37,240 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:44:37,241 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:44:37,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:44:37,246 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:44:37" (1/1) ... [2023-11-29 00:44:37,247 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@352fed33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:37, skipping insertion in model container [2023-11-29 00:44:37,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:44:37" (1/1) ... [2023-11-29 00:44:37,371 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:44:37,715 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_e0a50863-343d-4974-8f68-ad807c73fea5/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label02.c[26860,26873] [2023-11-29 00:44:37,765 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_e0a50863-343d-4974-8f68-ad807c73fea5/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label02.c[34150,34163] [2023-11-29 00:44:38,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:44:38,460 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:44:38,505 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_e0a50863-343d-4974-8f68-ad807c73fea5/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label02.c[26860,26873] [2023-11-29 00:44:38,519 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_e0a50863-343d-4974-8f68-ad807c73fea5/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label02.c[34150,34163] [2023-11-29 00:44:38,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:44:39,017 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:44:39,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:39 WrapperNode [2023-11-29 00:44:39,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:44:39,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:44:39,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:44:39,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:44:39,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:39" (1/1) ... [2023-11-29 00:44:39,073 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:39" (1/1) ... [2023-11-29 00:44:39,378 INFO L138 Inliner]: procedures = 39, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5284 [2023-11-29 00:44:39,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:44:39,379 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:44:39,379 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:44:39,379 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:44:39,392 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:39" (1/1) ... [2023-11-29 00:44:39,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:39" (1/1) ... [2023-11-29 00:44:39,442 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:39" (1/1) ... [2023-11-29 00:44:39,567 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 00:44:39,567 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:39" (1/1) ... [2023-11-29 00:44:39,567 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:39" (1/1) ... [2023-11-29 00:44:39,716 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:39" (1/1) ... [2023-11-29 00:44:39,742 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:39" (1/1) ... [2023-11-29 00:44:39,761 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:39" (1/1) ... [2023-11-29 00:44:39,774 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:39" (1/1) ... [2023-11-29 00:44:39,849 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:44:39,850 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:44:39,850 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:44:39,850 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:44:39,851 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:39" (1/1) ... [2023-11-29 00:44:39,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:44:39,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:44:39,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:44:39,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:44:39,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:44:39,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:44:39,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:44:39,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:44:40,068 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:44:40,070 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:44:44,696 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:44:44,753 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:44:44,754 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 00:44:44,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:44:44 BoogieIcfgContainer [2023-11-29 00:44:44,755 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:44:44,757 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:44:44,757 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:44:44,760 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:44:44,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:44:37" (1/3) ... [2023-11-29 00:44:44,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d2cdb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:44:44, skipping insertion in model container [2023-11-29 00:44:44,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:44:39" (2/3) ... [2023-11-29 00:44:44,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d2cdb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:44:44, skipping insertion in model container [2023-11-29 00:44:44,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:44:44" (3/3) ... [2023-11-29 00:44:44,762 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label02.c [2023-11-29 00:44:44,776 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:44:44,776 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 00:44:44,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:44:44,845 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;@51ab86e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:44:44,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 00:44:44,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 882 states, 879 states have (on average 1.9704209328782707) internal successors, (1732), 881 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:44,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 00:44:44,861 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:44,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:44,862 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:44,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:44,866 INFO L85 PathProgramCache]: Analyzing trace with hash -98995374, now seen corresponding path program 1 times [2023-11-29 00:44:44,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:44:44,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273080765] [2023-11-29 00:44:44,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:44,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:44:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:45,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:44:45,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273080765] [2023-11-29 00:44:45,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273080765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:45,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:45,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:44:45,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038550944] [2023-11-29 00:44:45,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:45,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:44:45,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:44:45,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:44:45,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:44:45,160 INFO L87 Difference]: Start difference. First operand has 882 states, 879 states have (on average 1.9704209328782707) internal successors, (1732), 881 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:45,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:45,244 INFO L93 Difference]: Finished difference Result 1699 states and 3336 transitions. [2023-11-29 00:44:45,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:44:45,246 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-29 00:44:45,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:45,265 INFO L225 Difference]: With dead ends: 1699 [2023-11-29 00:44:45,265 INFO L226 Difference]: Without dead ends: 878 [2023-11-29 00:44:45,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:44:45,274 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:45,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1661 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:44:45,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-11-29 00:44:45,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2023-11-29 00:44:45,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.8961187214611872) internal successors, (1661), 877 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:45,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1661 transitions. [2023-11-29 00:44:45,361 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1661 transitions. Word has length 27 [2023-11-29 00:44:45,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:45,362 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1661 transitions. [2023-11-29 00:44:45,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:45,362 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1661 transitions. [2023-11-29 00:44:45,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 00:44:45,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:45,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:45,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:44:45,365 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:45,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:45,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1904433708, now seen corresponding path program 1 times [2023-11-29 00:44:45,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:44:45,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067421067] [2023-11-29 00:44:45,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:45,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:44:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:45,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:44:45,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067421067] [2023-11-29 00:44:45,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067421067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:45,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:45,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:44:45,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754422138] [2023-11-29 00:44:45,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:45,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:44:45,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:44:45,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:44:45,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:44:45,626 INFO L87 Difference]: Start difference. First operand 878 states and 1661 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:45,747 INFO L93 Difference]: Finished difference Result 940 states and 1760 transitions. [2023-11-29 00:44:45,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:44:45,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-29 00:44:45,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:45,754 INFO L225 Difference]: With dead ends: 940 [2023-11-29 00:44:45,754 INFO L226 Difference]: Without dead ends: 878 [2023-11-29 00:44:45,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:44:45,756 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 0 mSDsluCounter, 3251 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4909 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:45,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4909 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:44:45,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-11-29 00:44:45,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2023-11-29 00:44:45,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 876 states have (on average 1.82648401826484) internal successors, (1600), 877 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1600 transitions. [2023-11-29 00:44:45,783 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1600 transitions. Word has length 27 [2023-11-29 00:44:45,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:45,784 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1600 transitions. [2023-11-29 00:44:45,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:45,784 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1600 transitions. [2023-11-29 00:44:45,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 00:44:45,787 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:45,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:45,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:44:45,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:45,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:45,788 INFO L85 PathProgramCache]: Analyzing trace with hash 630448219, now seen corresponding path program 1 times [2023-11-29 00:44:45,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:44:45,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794057544] [2023-11-29 00:44:45,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:45,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:44:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:46,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:46,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:44:46,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794057544] [2023-11-29 00:44:46,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794057544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:46,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:46,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:44:46,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125569730] [2023-11-29 00:44:46,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:46,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:44:46,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:44:46,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:44:46,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:44:46,074 INFO L87 Difference]: Start difference. First operand 878 states and 1600 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:52,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:52,844 INFO L93 Difference]: Finished difference Result 3133 states and 5909 transitions. [2023-11-29 00:44:52,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:44:52,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-29 00:44:52,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:52,858 INFO L225 Difference]: With dead ends: 3133 [2023-11-29 00:44:52,858 INFO L226 Difference]: Without dead ends: 2380 [2023-11-29 00:44:52,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:44:52,861 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 2498 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5521 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2498 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 6621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:52,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2498 Valid, 869 Invalid, 6621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5521 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-11-29 00:44:52,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2023-11-29 00:44:52,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2380. [2023-11-29 00:44:52,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2378 states have (on average 1.5668629100084104) internal successors, (3726), 2379 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:52,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 3726 transitions. [2023-11-29 00:44:52,914 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 3726 transitions. Word has length 62 [2023-11-29 00:44:52,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:52,915 INFO L495 AbstractCegarLoop]: Abstraction has 2380 states and 3726 transitions. [2023-11-29 00:44:52,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:52,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 3726 transitions. [2023-11-29 00:44:52,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 00:44:52,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:52,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:52,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:44:52,919 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:52,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:52,920 INFO L85 PathProgramCache]: Analyzing trace with hash -537635452, now seen corresponding path program 1 times [2023-11-29 00:44:52,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:44:52,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114931063] [2023-11-29 00:44:52,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:52,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:44:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:53,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:53,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:44:53,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114931063] [2023-11-29 00:44:53,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114931063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:53,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:53,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:44:53,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88644321] [2023-11-29 00:44:53,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:53,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:44:53,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:44:53,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:44:53,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:44:53,213 INFO L87 Difference]: Start difference. First operand 2380 states and 3726 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:53,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:53,874 INFO L93 Difference]: Finished difference Result 3324 states and 5262 transitions. [2023-11-29 00:44:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 00:44:53,875 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-11-29 00:44:53,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:53,895 INFO L225 Difference]: With dead ends: 3324 [2023-11-29 00:44:53,895 INFO L226 Difference]: Without dead ends: 3265 [2023-11-29 00:44:53,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:44:53,898 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 13341 mSDsluCounter, 4679 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13341 SdHoareTripleChecker+Valid, 6272 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:53,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13341 Valid, 6272 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:44:53,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2023-11-29 00:44:53,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 2437. [2023-11-29 00:44:53,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2437 states, 2435 states have (on average 1.5683778234086243) internal successors, (3819), 2436 states have internal predecessors, (3819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:53,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3819 transitions. [2023-11-29 00:44:53,974 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3819 transitions. Word has length 87 [2023-11-29 00:44:53,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:53,975 INFO L495 AbstractCegarLoop]: Abstraction has 2437 states and 3819 transitions. [2023-11-29 00:44:53,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:53,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3819 transitions. [2023-11-29 00:44:53,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 00:44:53,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:53,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:53,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:44:53,978 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:53,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:53,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1411800044, now seen corresponding path program 1 times [2023-11-29 00:44:53,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:44:53,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159571473] [2023-11-29 00:44:53,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:53,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:44:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:54,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:44:54,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159571473] [2023-11-29 00:44:54,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159571473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:54,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:54,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:44:54,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342931217] [2023-11-29 00:44:54,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:54,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:44:54,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:44:54,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:44:54,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:54,099 INFO L87 Difference]: Start difference. First operand 2437 states and 3819 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:54,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:54,146 INFO L93 Difference]: Finished difference Result 2658 states and 4178 transitions. [2023-11-29 00:44:54,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:44:54,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-11-29 00:44:54,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:54,161 INFO L225 Difference]: With dead ends: 2658 [2023-11-29 00:44:54,162 INFO L226 Difference]: Without dead ends: 2542 [2023-11-29 00:44:54,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:54,164 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 1504 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:54,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1685 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:44:54,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2023-11-29 00:44:54,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2540. [2023-11-29 00:44:54,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2538 states have (on average 1.570133963750985) internal successors, (3985), 2539 states have internal predecessors, (3985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:54,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 3985 transitions. [2023-11-29 00:44:54,234 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 3985 transitions. Word has length 89 [2023-11-29 00:44:54,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:54,235 INFO L495 AbstractCegarLoop]: Abstraction has 2540 states and 3985 transitions. [2023-11-29 00:44:54,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:54,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 3985 transitions. [2023-11-29 00:44:54,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 00:44:54,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:54,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:54,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:44:54,237 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:54,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:54,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1409655092, now seen corresponding path program 1 times [2023-11-29 00:44:54,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:44:54,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898988349] [2023-11-29 00:44:54,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:54,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:44:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:54,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:54,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:44:54,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898988349] [2023-11-29 00:44:54,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898988349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:54,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:54,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:44:54,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250353213] [2023-11-29 00:44:54,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:54,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:44:54,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:44:54,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:44:54,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:44:54,787 INFO L87 Difference]: Start difference. First operand 2540 states and 3985 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:55,334 INFO L93 Difference]: Finished difference Result 2761 states and 4341 transitions. [2023-11-29 00:44:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:44:55,334 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-11-29 00:44:55,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:55,349 INFO L225 Difference]: With dead ends: 2761 [2023-11-29 00:44:55,349 INFO L226 Difference]: Without dead ends: 2542 [2023-11-29 00:44:55,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:44:55,351 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 10612 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10612 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:55,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10612 Valid, 2234 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:44:55,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2023-11-29 00:44:55,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2540. [2023-11-29 00:44:55,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2538 states have (on average 1.5693459416863673) internal successors, (3983), 2539 states have internal predecessors, (3983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:55,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 3983 transitions. [2023-11-29 00:44:55,421 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 3983 transitions. Word has length 89 [2023-11-29 00:44:55,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:55,421 INFO L495 AbstractCegarLoop]: Abstraction has 2540 states and 3983 transitions. [2023-11-29 00:44:55,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:55,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 3983 transitions. [2023-11-29 00:44:55,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-29 00:44:55,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:55,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:55,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:44:55,423 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:55,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:55,424 INFO L85 PathProgramCache]: Analyzing trace with hash -878537093, now seen corresponding path program 1 times [2023-11-29 00:44:55,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:44:55,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293161394] [2023-11-29 00:44:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:55,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:44:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:55,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:55,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:44:55,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293161394] [2023-11-29 00:44:55,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293161394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:55,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:55,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:44:55,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849986787] [2023-11-29 00:44:55,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:55,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:44:55,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:44:55,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:44:55,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:44:55,715 INFO L87 Difference]: Start difference. First operand 2540 states and 3983 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:55,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:55,762 INFO L93 Difference]: Finished difference Result 2548 states and 3992 transitions. [2023-11-29 00:44:55,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:44:55,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-11-29 00:44:55,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:55,775 INFO L225 Difference]: With dead ends: 2548 [2023-11-29 00:44:55,775 INFO L226 Difference]: Without dead ends: 2546 [2023-11-29 00:44:55,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:44:55,777 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 1 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4780 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:55,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4780 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:44:55,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2023-11-29 00:44:55,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2544. [2023-11-29 00:44:55,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2544 states, 2542 states have (on average 1.5680566483084186) internal successors, (3986), 2543 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:55,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2544 states to 2544 states and 3986 transitions. [2023-11-29 00:44:55,823 INFO L78 Accepts]: Start accepts. Automaton has 2544 states and 3986 transitions. Word has length 90 [2023-11-29 00:44:55,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:55,823 INFO L495 AbstractCegarLoop]: Abstraction has 2544 states and 3986 transitions. [2023-11-29 00:44:55,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:55,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2544 states and 3986 transitions. [2023-11-29 00:44:55,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 00:44:55,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:55,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:55,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:44:55,825 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:55,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:55,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1337202636, now seen corresponding path program 1 times [2023-11-29 00:44:55,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:44:55,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193470725] [2023-11-29 00:44:55,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:55,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:44:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:55,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:44:55,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193470725] [2023-11-29 00:44:55,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193470725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:55,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:55,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:44:55,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195385156] [2023-11-29 00:44:55,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:55,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:44:55,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:44:55,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:44:55,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:55,895 INFO L87 Difference]: Start difference. First operand 2544 states and 3986 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:55,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:55,935 INFO L93 Difference]: Finished difference Result 2778 states and 4359 transitions. [2023-11-29 00:44:55,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:44:55,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-29 00:44:55,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:55,946 INFO L225 Difference]: With dead ends: 2778 [2023-11-29 00:44:55,947 INFO L226 Difference]: Without dead ends: 2658 [2023-11-29 00:44:55,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:55,948 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1524 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:55,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1773 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:44:55,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2023-11-29 00:44:55,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 2656. [2023-11-29 00:44:55,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2656 states, 2654 states have (on average 1.568575734740015) internal successors, (4163), 2655 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 4163 transitions. [2023-11-29 00:44:55,999 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 4163 transitions. Word has length 91 [2023-11-29 00:44:55,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:55,999 INFO L495 AbstractCegarLoop]: Abstraction has 2656 states and 4163 transitions. [2023-11-29 00:44:55,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:55,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 4163 transitions. [2023-11-29 00:44:56,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 00:44:56,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:56,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:56,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:44:56,001 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:56,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:56,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1411815116, now seen corresponding path program 1 times [2023-11-29 00:44:56,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:44:56,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55337198] [2023-11-29 00:44:56,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:56,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:44:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:56,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:56,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:44:56,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55337198] [2023-11-29 00:44:56,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55337198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:56,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:56,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:44:56,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339493383] [2023-11-29 00:44:56,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:56,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:44:56,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:44:56,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:44:56,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:56,071 INFO L87 Difference]: Start difference. First operand 2656 states and 4163 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:56,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:56,117 INFO L93 Difference]: Finished difference Result 3298 states and 5183 transitions. [2023-11-29 00:44:56,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:44:56,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-29 00:44:56,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:56,130 INFO L225 Difference]: With dead ends: 3298 [2023-11-29 00:44:56,130 INFO L226 Difference]: Without dead ends: 2965 [2023-11-29 00:44:56,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:56,132 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 1522 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:56,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1779 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:44:56,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2023-11-29 00:44:56,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 2963. [2023-11-29 00:44:56,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2963 states, 2961 states have (on average 1.568726781492739) internal successors, (4645), 2962 states have internal predecessors, (4645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:56,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 4645 transitions. [2023-11-29 00:44:56,189 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 4645 transitions. Word has length 91 [2023-11-29 00:44:56,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:56,189 INFO L495 AbstractCegarLoop]: Abstraction has 2963 states and 4645 transitions. [2023-11-29 00:44:56,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:56,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 4645 transitions. [2023-11-29 00:44:56,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 00:44:56,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:56,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:56,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:44:56,191 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:56,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:56,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1756812492, now seen corresponding path program 1 times [2023-11-29 00:44:56,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:44:56,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111725915] [2023-11-29 00:44:56,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:56,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:44:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:56,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:56,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:44:56,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111725915] [2023-11-29 00:44:56,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111725915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:56,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:56,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:44:56,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935790278] [2023-11-29 00:44:56,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:56,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:44:56,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:44:56,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:44:56,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:56,258 INFO L87 Difference]: Start difference. First operand 2963 states and 4645 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:56,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:56,312 INFO L93 Difference]: Finished difference Result 4195 states and 6587 transitions. [2023-11-29 00:44:56,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:44:56,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-29 00:44:56,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:56,329 INFO L225 Difference]: With dead ends: 4195 [2023-11-29 00:44:56,330 INFO L226 Difference]: Without dead ends: 3555 [2023-11-29 00:44:56,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:56,332 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1518 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:56,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 1775 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:44:56,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3555 states. [2023-11-29 00:44:56,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3555 to 3553. [2023-11-29 00:44:56,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3553 states, 3551 states have (on average 1.5660377358490567) internal successors, (5561), 3552 states have internal predecessors, (5561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:56,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3553 states to 3553 states and 5561 transitions. [2023-11-29 00:44:56,407 INFO L78 Accepts]: Start accepts. Automaton has 3553 states and 5561 transitions. Word has length 91 [2023-11-29 00:44:56,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:56,408 INFO L495 AbstractCegarLoop]: Abstraction has 3553 states and 5561 transitions. [2023-11-29 00:44:56,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:56,408 INFO L276 IsEmpty]: Start isEmpty. Operand 3553 states and 5561 transitions. [2023-11-29 00:44:56,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 00:44:56,409 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:56,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:56,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:44:56,409 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:56,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:56,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1488229324, now seen corresponding path program 1 times [2023-11-29 00:44:56,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:44:56,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688115099] [2023-11-29 00:44:56,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:56,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:44:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:56,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:44:56,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688115099] [2023-11-29 00:44:56,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688115099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:56,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:56,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:44:56,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203604893] [2023-11-29 00:44:56,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:56,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:44:56,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:44:56,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:44:56,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:56,478 INFO L87 Difference]: Start difference. First operand 3553 states and 5561 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:56,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:56,552 INFO L93 Difference]: Finished difference Result 5917 states and 9251 transitions. [2023-11-29 00:44:56,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:44:56,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-29 00:44:56,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:56,564 INFO L225 Difference]: With dead ends: 5917 [2023-11-29 00:44:56,564 INFO L226 Difference]: Without dead ends: 4687 [2023-11-29 00:44:56,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:56,568 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 1516 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:56,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1777 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:44:56,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4687 states. [2023-11-29 00:44:56,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4687 to 4685. [2023-11-29 00:44:56,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4685 states, 4683 states have (on average 1.5581891949604953) internal successors, (7297), 4684 states have internal predecessors, (7297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:56,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 7297 transitions. [2023-11-29 00:44:56,711 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 7297 transitions. Word has length 91 [2023-11-29 00:44:56,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:56,711 INFO L495 AbstractCegarLoop]: Abstraction has 4685 states and 7297 transitions. [2023-11-29 00:44:56,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:56,712 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 7297 transitions. [2023-11-29 00:44:56,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 00:44:56,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:56,713 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:56,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:44:56,713 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:56,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:56,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1528173260, now seen corresponding path program 1 times [2023-11-29 00:44:56,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:44:56,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885189858] [2023-11-29 00:44:56,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:56,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:44:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:56,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:56,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:44:56,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885189858] [2023-11-29 00:44:56,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885189858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:56,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:56,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:44:56,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269499060] [2023-11-29 00:44:56,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:56,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:44:56,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:44:56,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:44:56,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:56,778 INFO L87 Difference]: Start difference. First operand 4685 states and 7297 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:56,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:56,887 INFO L93 Difference]: Finished difference Result 9217 states and 14291 transitions. [2023-11-29 00:44:56,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:44:56,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-29 00:44:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:56,898 INFO L225 Difference]: With dead ends: 9217 [2023-11-29 00:44:56,898 INFO L226 Difference]: Without dead ends: 6855 [2023-11-29 00:44:56,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:56,902 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 1514 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:56,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1779 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:44:56,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2023-11-29 00:44:57,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 6853. [2023-11-29 00:44:57,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6853 states, 6851 states have (on average 1.5438622098963655) internal successors, (10577), 6852 states have internal predecessors, (10577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6853 states to 6853 states and 10577 transitions. [2023-11-29 00:44:57,046 INFO L78 Accepts]: Start accepts. Automaton has 6853 states and 10577 transitions. Word has length 91 [2023-11-29 00:44:57,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:57,046 INFO L495 AbstractCegarLoop]: Abstraction has 6853 states and 10577 transitions. [2023-11-29 00:44:57,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:57,047 INFO L276 IsEmpty]: Start isEmpty. Operand 6853 states and 10577 transitions. [2023-11-29 00:44:57,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 00:44:57,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:57,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:57,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:44:57,048 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:57,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:57,048 INFO L85 PathProgramCache]: Analyzing trace with hash 902517196, now seen corresponding path program 1 times [2023-11-29 00:44:57,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:44:57,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730593919] [2023-11-29 00:44:57,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:57,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:44:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:57,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:57,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:44:57,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730593919] [2023-11-29 00:44:57,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730593919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:57,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:57,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:44:57,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353511399] [2023-11-29 00:44:57,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:57,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:44:57,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:44:57,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:44:57,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:57,125 INFO L87 Difference]: Start difference. First operand 6853 states and 10577 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:57,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:57,305 INFO L93 Difference]: Finished difference Result 15529 states and 23795 transitions. [2023-11-29 00:44:57,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:44:57,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-29 00:44:57,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:57,320 INFO L225 Difference]: With dead ends: 15529 [2023-11-29 00:44:57,321 INFO L226 Difference]: Without dead ends: 10999 [2023-11-29 00:44:57,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:57,327 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 1512 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:57,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1781 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:44:57,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10999 states. [2023-11-29 00:44:57,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10999 to 10997. [2023-11-29 00:44:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10997 states, 10995 states have (on average 1.5236925875397909) internal successors, (16753), 10996 states have internal predecessors, (16753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:57,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10997 states to 10997 states and 16753 transitions. [2023-11-29 00:44:57,855 INFO L78 Accepts]: Start accepts. Automaton has 10997 states and 16753 transitions. Word has length 91 [2023-11-29 00:44:57,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:57,856 INFO L495 AbstractCegarLoop]: Abstraction has 10997 states and 16753 transitions. [2023-11-29 00:44:57,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:57,856 INFO L276 IsEmpty]: Start isEmpty. Operand 10997 states and 16753 transitions. [2023-11-29 00:44:57,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 00:44:57,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:57,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:57,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 00:44:57,858 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:57,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:57,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1791250636, now seen corresponding path program 1 times [2023-11-29 00:44:57,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:44:57,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071592452] [2023-11-29 00:44:57,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:57,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:44:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:57,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:57,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:44:57,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071592452] [2023-11-29 00:44:57,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071592452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:57,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:57,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:44:57,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315147482] [2023-11-29 00:44:57,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:57,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:44:57,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:44:57,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:44:57,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:57,955 INFO L87 Difference]: Start difference. First operand 10997 states and 16753 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:58,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:58,444 INFO L93 Difference]: Finished difference Result 27577 states and 41651 transitions. [2023-11-29 00:44:58,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:44:58,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-29 00:44:58,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:58,480 INFO L225 Difference]: With dead ends: 27577 [2023-11-29 00:44:58,480 INFO L226 Difference]: Without dead ends: 18903 [2023-11-29 00:44:58,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:58,494 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 1510 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:58,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1783 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:44:58,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18903 states. [2023-11-29 00:44:58,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18903 to 18901. [2023-11-29 00:44:58,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18901 states, 18899 states have (on average 1.4993915021958835) internal successors, (28337), 18900 states have internal predecessors, (28337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:59,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18901 states to 18901 states and 28337 transitions. [2023-11-29 00:44:59,007 INFO L78 Accepts]: Start accepts. Automaton has 18901 states and 28337 transitions. Word has length 91 [2023-11-29 00:44:59,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:44:59,007 INFO L495 AbstractCegarLoop]: Abstraction has 18901 states and 28337 transitions. [2023-11-29 00:44:59,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:59,008 INFO L276 IsEmpty]: Start isEmpty. Operand 18901 states and 28337 transitions. [2023-11-29 00:44:59,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 00:44:59,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:44:59,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:59,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:44:59,009 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:44:59,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:59,010 INFO L85 PathProgramCache]: Analyzing trace with hash -2127768116, now seen corresponding path program 1 times [2023-11-29 00:44:59,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:44:59,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696137545] [2023-11-29 00:44:59,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:44:59,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:44:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:44:59,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:44:59,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:44:59,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696137545] [2023-11-29 00:44:59,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696137545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:59,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:59,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:44:59,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213276086] [2023-11-29 00:44:59,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:59,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:44:59,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:44:59,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:44:59,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:59,074 INFO L87 Difference]: Start difference. First operand 18901 states and 28337 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:59,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:44:59,695 INFO L93 Difference]: Finished difference Result 50521 states and 75059 transitions. [2023-11-29 00:44:59,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:44:59,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-11-29 00:44:59,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:44:59,744 INFO L225 Difference]: With dead ends: 50521 [2023-11-29 00:44:59,744 INFO L226 Difference]: Without dead ends: 33943 [2023-11-29 00:44:59,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:44:59,762 INFO L413 NwaCegarLoop]: 1677 mSDtfsCounter, 1520 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:44:59,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1781 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:44:59,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33943 states. [2023-11-29 00:45:00,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33943 to 33941. [2023-11-29 00:45:00,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33941 states, 33939 states have (on average 1.472317982262294) internal successors, (49969), 33940 states have internal predecessors, (49969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:00,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33941 states to 33941 states and 49969 transitions. [2023-11-29 00:45:00,733 INFO L78 Accepts]: Start accepts. Automaton has 33941 states and 49969 transitions. Word has length 91 [2023-11-29 00:45:00,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:45:00,733 INFO L495 AbstractCegarLoop]: Abstraction has 33941 states and 49969 transitions. [2023-11-29 00:45:00,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:00,734 INFO L276 IsEmpty]: Start isEmpty. Operand 33941 states and 49969 transitions. [2023-11-29 00:45:00,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 00:45:00,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:45:00,741 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:45:00,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 00:45:00,742 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:45:00,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:00,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1625082506, now seen corresponding path program 1 times [2023-11-29 00:45:00,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:45:00,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730132040] [2023-11-29 00:45:00,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:00,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:45:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:01,028 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:45:01,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:45:01,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730132040] [2023-11-29 00:45:01,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730132040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:45:01,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:45:01,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:45:01,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30997467] [2023-11-29 00:45:01,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:01,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:45:01,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:45:01,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:45:01,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:45:01,031 INFO L87 Difference]: Start difference. First operand 33941 states and 49969 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:06,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:45:06,609 INFO L93 Difference]: Finished difference Result 283559 states and 415674 transitions. [2023-11-29 00:45:06,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:45:06,610 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 00:45:06,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:45:06,955 INFO L225 Difference]: With dead ends: 283559 [2023-11-29 00:45:06,956 INFO L226 Difference]: Without dead ends: 261541 [2023-11-29 00:45:07,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:45:07,007 INFO L413 NwaCegarLoop]: 1693 mSDtfsCounter, 11678 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11678 SdHoareTripleChecker+Valid, 5224 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:45:07,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11678 Valid, 5224 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:45:07,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261541 states. [2023-11-29 00:45:10,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261541 to 60821. [2023-11-29 00:45:10,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60821 states, 60819 states have (on average 1.4635064700175933) internal successors, (89009), 60820 states have internal predecessors, (89009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60821 states to 60821 states and 89009 transitions. [2023-11-29 00:45:10,280 INFO L78 Accepts]: Start accepts. Automaton has 60821 states and 89009 transitions. Word has length 115 [2023-11-29 00:45:10,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:45:10,281 INFO L495 AbstractCegarLoop]: Abstraction has 60821 states and 89009 transitions. [2023-11-29 00:45:10,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:10,281 INFO L276 IsEmpty]: Start isEmpty. Operand 60821 states and 89009 transitions. [2023-11-29 00:45:10,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 00:45:10,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:45:10,288 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:45:10,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 00:45:10,289 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:45:10,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:10,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1550470026, now seen corresponding path program 1 times [2023-11-29 00:45:10,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:45:10,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584821084] [2023-11-29 00:45:10,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:10,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:45:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:45:10,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:45:10,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584821084] [2023-11-29 00:45:10,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584821084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:45:10,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:45:10,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:45:10,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699134504] [2023-11-29 00:45:10,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:10,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:45:10,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:45:10,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:45:10,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:45:10,527 INFO L87 Difference]: Start difference. First operand 60821 states and 89009 transitions. Second operand has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:18,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:45:18,732 INFO L93 Difference]: Finished difference Result 315175 states and 461754 transitions. [2023-11-29 00:45:18,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:45:18,732 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 00:45:18,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:45:19,165 INFO L225 Difference]: With dead ends: 315175 [2023-11-29 00:45:19,165 INFO L226 Difference]: Without dead ends: 283557 [2023-11-29 00:45:19,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:45:19,200 INFO L413 NwaCegarLoop]: 1692 mSDtfsCounter, 11680 mSDsluCounter, 3489 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11680 SdHoareTripleChecker+Valid, 5181 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:45:19,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11680 Valid, 5181 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:45:19,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283557 states. [2023-11-29 00:45:23,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283557 to 103445. [2023-11-29 00:45:24,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103445 states, 103443 states have (on average 1.4581266977949208) internal successors, (150833), 103444 states have internal predecessors, (150833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:24,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103445 states to 103445 states and 150833 transitions. [2023-11-29 00:45:24,350 INFO L78 Accepts]: Start accepts. Automaton has 103445 states and 150833 transitions. Word has length 115 [2023-11-29 00:45:24,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:45:24,350 INFO L495 AbstractCegarLoop]: Abstraction has 103445 states and 150833 transitions. [2023-11-29 00:45:24,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 10 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:24,351 INFO L276 IsEmpty]: Start isEmpty. Operand 103445 states and 150833 transitions. [2023-11-29 00:45:24,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 00:45:24,358 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:45:24,359 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:45:24,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 00:45:24,359 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:45:24,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:24,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1205472650, now seen corresponding path program 1 times [2023-11-29 00:45:24,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:45:24,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344888557] [2023-11-29 00:45:24,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:24,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:45:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 00:45:24,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:45:24,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344888557] [2023-11-29 00:45:24,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344888557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:45:24,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:45:24,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:45:24,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888334790] [2023-11-29 00:45:24,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:24,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:45:24,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:45:24,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:45:24,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:45:24,617 INFO L87 Difference]: Start difference. First operand 103445 states and 150833 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:34,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:45:34,374 INFO L93 Difference]: Finished difference Result 346791 states and 507706 transitions. [2023-11-29 00:45:34,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:45:34,375 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 00:45:34,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:45:34,718 INFO L225 Difference]: With dead ends: 346791 [2023-11-29 00:45:34,718 INFO L226 Difference]: Without dead ends: 315173 [2023-11-29 00:45:34,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:45:34,758 INFO L413 NwaCegarLoop]: 1690 mSDtfsCounter, 11722 mSDsluCounter, 3485 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11722 SdHoareTripleChecker+Valid, 5175 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:45:34,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11722 Valid, 5175 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:45:34,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315173 states. [2023-11-29 00:45:41,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315173 to 135061. [2023-11-29 00:45:41,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135061 states, 135059 states have (on average 1.457029890640387) internal successors, (196785), 135060 states have internal predecessors, (196785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:41,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135061 states to 135061 states and 196785 transitions. [2023-11-29 00:45:41,312 INFO L78 Accepts]: Start accepts. Automaton has 135061 states and 196785 transitions. Word has length 115 [2023-11-29 00:45:41,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:45:41,312 INFO L495 AbstractCegarLoop]: Abstraction has 135061 states and 196785 transitions. [2023-11-29 00:45:41,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:41,313 INFO L276 IsEmpty]: Start isEmpty. Operand 135061 states and 196785 transitions. [2023-11-29 00:45:41,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 00:45:41,320 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:45:41,320 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:45:41,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 00:45:41,321 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:45:41,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:41,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1474055818, now seen corresponding path program 1 times [2023-11-29 00:45:41,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:45:41,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564376763] [2023-11-29 00:45:41,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:45:41,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:45:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:41,549 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 00:45:41,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:45:41,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564376763] [2023-11-29 00:45:41,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564376763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:45:41,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:45:41,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:45:41,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69626528] [2023-11-29 00:45:41,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:41,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:45:41,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:45:41,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:45:41,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:45:41,552 INFO L87 Difference]: Start difference. First operand 135061 states and 196785 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:52,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:45:52,824 INFO L93 Difference]: Finished difference Result 378407 states and 553658 transitions. [2023-11-29 00:45:52,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:45:52,824 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 00:45:52,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:45:53,292 INFO L225 Difference]: With dead ends: 378407 [2023-11-29 00:45:53,292 INFO L226 Difference]: Without dead ends: 346789 [2023-11-29 00:45:53,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:45:53,334 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 11776 mSDsluCounter, 3366 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11776 SdHoareTripleChecker+Valid, 5054 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:45:53,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11776 Valid, 5054 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:45:53,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346789 states. [2023-11-29 00:46:00,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346789 to 166677. [2023-11-29 00:46:00,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166677 states, 166675 states have (on average 1.456349182540873) internal successors, (242737), 166676 states have internal predecessors, (242737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:01,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166677 states to 166677 states and 242737 transitions. [2023-11-29 00:46:01,328 INFO L78 Accepts]: Start accepts. Automaton has 166677 states and 242737 transitions. Word has length 115 [2023-11-29 00:46:01,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:46:01,329 INFO L495 AbstractCegarLoop]: Abstraction has 166677 states and 242737 transitions. [2023-11-29 00:46:01,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:01,329 INFO L276 IsEmpty]: Start isEmpty. Operand 166677 states and 242737 transitions. [2023-11-29 00:46:01,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 00:46:01,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:46:01,341 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:46:01,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 00:46:01,341 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:46:01,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:46:01,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1434111882, now seen corresponding path program 1 times [2023-11-29 00:46:01,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:46:01,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914680331] [2023-11-29 00:46:01,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:46:01,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:46:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:46:01,625 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 00:46:01,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:46:01,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914680331] [2023-11-29 00:46:01,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914680331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:46:01,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:46:01,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:46:01,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960803238] [2023-11-29 00:46:01,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:46:01,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:46:01,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:46:01,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:46:01,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:46:01,628 INFO L87 Difference]: Start difference. First operand 166677 states and 242737 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:15,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:46:15,243 INFO L93 Difference]: Finished difference Result 410023 states and 599610 transitions. [2023-11-29 00:46:15,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:46:15,243 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 00:46:15,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:46:15,699 INFO L225 Difference]: With dead ends: 410023 [2023-11-29 00:46:15,699 INFO L226 Difference]: Without dead ends: 378405 [2023-11-29 00:46:15,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:46:15,765 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 11829 mSDsluCounter, 3362 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11829 SdHoareTripleChecker+Valid, 5048 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:46:15,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11829 Valid, 5048 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:46:15,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378405 states. [2023-11-29 00:46:24,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378405 to 198293. [2023-11-29 00:46:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198293 states, 198291 states have (on average 1.4558855419560142) internal successors, (288689), 198292 states have internal predecessors, (288689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:25,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198293 states to 198293 states and 288689 transitions. [2023-11-29 00:46:25,400 INFO L78 Accepts]: Start accepts. Automaton has 198293 states and 288689 transitions. Word has length 115 [2023-11-29 00:46:25,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:46:25,400 INFO L495 AbstractCegarLoop]: Abstraction has 198293 states and 288689 transitions. [2023-11-29 00:46:25,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:25,400 INFO L276 IsEmpty]: Start isEmpty. Operand 198293 states and 288689 transitions. [2023-11-29 00:46:25,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 00:46:25,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:46:25,408 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:46:25,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 00:46:25,409 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:46:25,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:46:25,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2059767946, now seen corresponding path program 1 times [2023-11-29 00:46:25,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:46:25,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976422952] [2023-11-29 00:46:25,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:46:25,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:46:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:46:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 00:46:25,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:46:25,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976422952] [2023-11-29 00:46:25,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976422952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:46:25,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:46:25,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:46:25,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328004080] [2023-11-29 00:46:25,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:46:25,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:46:25,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:46:25,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:46:25,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:46:25,693 INFO L87 Difference]: Start difference. First operand 198293 states and 288689 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:40,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:46:40,984 INFO L93 Difference]: Finished difference Result 441639 states and 645562 transitions. [2023-11-29 00:46:40,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:46:40,985 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 00:46:40,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:46:41,624 INFO L225 Difference]: With dead ends: 441639 [2023-11-29 00:46:41,624 INFO L226 Difference]: Without dead ends: 410021 [2023-11-29 00:46:41,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:46:41,681 INFO L413 NwaCegarLoop]: 1684 mSDtfsCounter, 11895 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11895 SdHoareTripleChecker+Valid, 5063 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:46:41,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11895 Valid, 5063 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:46:41,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410021 states. [2023-11-29 00:46:52,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410021 to 229909. [2023-11-29 00:46:52,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229909 states, 229907 states have (on average 1.4555494178080701) internal successors, (334641), 229908 states have internal predecessors, (334641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:53,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229909 states to 229909 states and 334641 transitions. [2023-11-29 00:46:53,117 INFO L78 Accepts]: Start accepts. Automaton has 229909 states and 334641 transitions. Word has length 115 [2023-11-29 00:46:53,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:46:53,117 INFO L495 AbstractCegarLoop]: Abstraction has 229909 states and 334641 transitions. [2023-11-29 00:46:53,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:53,117 INFO L276 IsEmpty]: Start isEmpty. Operand 229909 states and 334641 transitions. [2023-11-29 00:46:53,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 00:46:53,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:46:53,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:46:53,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 00:46:53,125 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:46:53,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:46:53,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1171034506, now seen corresponding path program 1 times [2023-11-29 00:46:53,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:46:53,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304173252] [2023-11-29 00:46:53,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:46:53,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:46:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:46:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 00:46:53,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:46:53,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304173252] [2023-11-29 00:46:53,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304173252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:46:53,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:46:53,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:46:53,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366279853] [2023-11-29 00:46:53,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:46:53,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:46:53,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:46:53,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:46:53,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:46:53,398 INFO L87 Difference]: Start difference. First operand 229909 states and 334641 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:47:10,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:47:10,272 INFO L93 Difference]: Finished difference Result 473255 states and 691514 transitions. [2023-11-29 00:47:10,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:47:10,273 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 00:47:10,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:47:11,039 INFO L225 Difference]: With dead ends: 473255 [2023-11-29 00:47:11,040 INFO L226 Difference]: Without dead ends: 441637 [2023-11-29 00:47:11,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:47:11,099 INFO L413 NwaCegarLoop]: 1684 mSDtfsCounter, 11704 mSDsluCounter, 3528 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11704 SdHoareTripleChecker+Valid, 5212 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:47:11,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11704 Valid, 5212 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:47:11,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441637 states. [2023-11-29 00:47:24,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441637 to 261525. [2023-11-29 00:47:24,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261525 states, 261523 states have (on average 1.4552945630021068) internal successors, (380593), 261524 states have internal predecessors, (380593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:47:24,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261525 states to 261525 states and 380593 transitions. [2023-11-29 00:47:24,611 INFO L78 Accepts]: Start accepts. Automaton has 261525 states and 380593 transitions. Word has length 115 [2023-11-29 00:47:24,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:47:24,612 INFO L495 AbstractCegarLoop]: Abstraction has 261525 states and 380593 transitions. [2023-11-29 00:47:24,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:47:24,612 INFO L276 IsEmpty]: Start isEmpty. Operand 261525 states and 380593 transitions. [2023-11-29 00:47:24,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 00:47:24,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:47:24,622 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:47:24,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 00:47:24,623 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:47:24,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:47:24,623 INFO L85 PathProgramCache]: Analyzing trace with hash -795085962, now seen corresponding path program 1 times [2023-11-29 00:47:24,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:47:24,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589463295] [2023-11-29 00:47:24,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:47:24,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:47:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:47:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 00:47:25,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:47:25,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589463295] [2023-11-29 00:47:25,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589463295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:47:25,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:47:25,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 00:47:25,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024423501] [2023-11-29 00:47:25,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:47:25,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:47:25,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:47:25,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:47:25,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:47:25,119 INFO L87 Difference]: Start difference. First operand 261525 states and 380593 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:47:45,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:47:45,001 INFO L93 Difference]: Finished difference Result 504871 states and 737466 transitions. [2023-11-29 00:47:45,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:47:45,002 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 00:47:45,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:47:45,611 INFO L225 Difference]: With dead ends: 504871 [2023-11-29 00:47:45,611 INFO L226 Difference]: Without dead ends: 473253 [2023-11-29 00:47:45,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:47:45,676 INFO L413 NwaCegarLoop]: 1683 mSDtfsCounter, 11611 mSDsluCounter, 3818 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11611 SdHoareTripleChecker+Valid, 5501 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:47:45,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11611 Valid, 5501 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:47:45,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473253 states. [2023-11-29 00:48:00,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473253 to 293141. [2023-11-29 00:48:00,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293141 states, 293139 states have (on average 1.4550946820450366) internal successors, (426545), 293140 states have internal predecessors, (426545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:01,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293141 states to 293141 states and 426545 transitions. [2023-11-29 00:48:01,270 INFO L78 Accepts]: Start accepts. Automaton has 293141 states and 426545 transitions. Word has length 115 [2023-11-29 00:48:01,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:48:01,271 INFO L495 AbstractCegarLoop]: Abstraction has 293141 states and 426545 transitions. [2023-11-29 00:48:01,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:01,271 INFO L276 IsEmpty]: Start isEmpty. Operand 293141 states and 426545 transitions. [2023-11-29 00:48:01,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 00:48:01,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:48:01,280 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] [2023-11-29 00:48:01,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 00:48:01,281 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:48:01,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:48:01,281 INFO L85 PathProgramCache]: Analyzing trace with hash -38647040, now seen corresponding path program 1 times [2023-11-29 00:48:01,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:48:01,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664559078] [2023-11-29 00:48:01,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:48:01,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:48:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:48:01,410 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:48:01,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:48:01,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664559078] [2023-11-29 00:48:01,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664559078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:48:01,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:48:01,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:48:01,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621212174] [2023-11-29 00:48:01,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:48:01,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:48:01,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:48:01,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:48:01,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:48:01,412 INFO L87 Difference]: Start difference. First operand 293141 states and 426545 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:14,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:48:14,393 INFO L93 Difference]: Finished difference Result 583961 states and 849459 transitions. [2023-11-29 00:48:14,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:48:14,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-11-29 00:48:14,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:48:14,757 INFO L225 Difference]: With dead ends: 583961 [2023-11-29 00:48:14,757 INFO L226 Difference]: Without dead ends: 293143 [2023-11-29 00:48:14,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:48:14,830 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 69 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:48:14,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 3241 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:48:15,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293143 states. [2023-11-29 00:48:30,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293143 to 293141. [2023-11-29 00:48:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293141 states, 293139 states have (on average 1.44308672677467) internal successors, (423025), 293140 states have internal predecessors, (423025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293141 states to 293141 states and 423025 transitions. [2023-11-29 00:48:31,055 INFO L78 Accepts]: Start accepts. Automaton has 293141 states and 423025 transitions. Word has length 116 [2023-11-29 00:48:31,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:48:31,055 INFO L495 AbstractCegarLoop]: Abstraction has 293141 states and 423025 transitions. [2023-11-29 00:48:31,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand 293141 states and 423025 transitions. [2023-11-29 00:48:31,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 00:48:31,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:48:31,062 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:48:31,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 00:48:31,062 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:48:31,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:48:31,063 INFO L85 PathProgramCache]: Analyzing trace with hash 213895486, now seen corresponding path program 1 times [2023-11-29 00:48:31,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:48:31,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465551125] [2023-11-29 00:48:31,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:48:31,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:48:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:48:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:48:31,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:48:31,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465551125] [2023-11-29 00:48:31,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465551125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:48:31,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:48:31,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:48:31,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779665841] [2023-11-29 00:48:31,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:48:31,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:48:31,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:48:31,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:48:31,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:48:31,161 INFO L87 Difference]: Start difference. First operand 293141 states and 423025 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:36,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:48:36,854 INFO L93 Difference]: Finished difference Result 397745 states and 575052 transitions. [2023-11-29 00:48:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:48:36,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2023-11-29 00:48:36,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:48:37,002 INFO L225 Difference]: With dead ends: 397745 [2023-11-29 00:48:37,003 INFO L226 Difference]: Without dead ends: 106927 [2023-11-29 00:48:37,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:48:37,225 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 63 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 3238 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:48:37,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 3238 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:48:37,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106927 states. [2023-11-29 00:48:42,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106927 to 106920. [2023-11-29 00:48:42,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106920 states, 106918 states have (on average 1.4444340522643522) internal successors, (154436), 106919 states have internal predecessors, (154436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:43,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106920 states to 106920 states and 154436 transitions. [2023-11-29 00:48:43,060 INFO L78 Accepts]: Start accepts. Automaton has 106920 states and 154436 transitions. Word has length 117 [2023-11-29 00:48:43,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:48:43,060 INFO L495 AbstractCegarLoop]: Abstraction has 106920 states and 154436 transitions. [2023-11-29 00:48:43,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:43,061 INFO L276 IsEmpty]: Start isEmpty. Operand 106920 states and 154436 transitions. [2023-11-29 00:48:43,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 00:48:43,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:48:43,065 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:48:43,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 00:48:43,065 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:48:43,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:48:43,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1052117390, now seen corresponding path program 1 times [2023-11-29 00:48:43,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:48:43,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320526645] [2023-11-29 00:48:43,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:48:43,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:48:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:48:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:48:43,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:48:43,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320526645] [2023-11-29 00:48:43,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320526645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:48:43,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:48:43,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:48:43,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913341867] [2023-11-29 00:48:43,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:48:43,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:48:43,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:48:43,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:48:43,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:48:43,159 INFO L87 Difference]: Start difference. First operand 106920 states and 154436 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:45,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:48:45,596 INFO L93 Difference]: Finished difference Result 159212 states and 229830 transitions. [2023-11-29 00:48:45,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:48:45,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-11-29 00:48:45,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:48:45,656 INFO L225 Difference]: With dead ends: 159212 [2023-11-29 00:48:45,656 INFO L226 Difference]: Without dead ends: 54634 [2023-11-29 00:48:45,679 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 [2023-11-29 00:48:45,679 INFO L413 NwaCegarLoop]: 1647 mSDtfsCounter, 65 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 3217 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:48:45,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 3217 Invalid, 10 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:48:45,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54634 states. [2023-11-29 00:48:48,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54634 to 54632. [2023-11-29 00:48:48,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54632 states, 54630 states have (on average 1.4357678930990299) internal successors, (78436), 54631 states have internal predecessors, (78436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:48,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54632 states to 54632 states and 78436 transitions. [2023-11-29 00:48:48,310 INFO L78 Accepts]: Start accepts. Automaton has 54632 states and 78436 transitions. Word has length 118 [2023-11-29 00:48:48,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:48:48,310 INFO L495 AbstractCegarLoop]: Abstraction has 54632 states and 78436 transitions. [2023-11-29 00:48:48,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:48,310 INFO L276 IsEmpty]: Start isEmpty. Operand 54632 states and 78436 transitions. [2023-11-29 00:48:48,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 00:48:48,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:48:48,314 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:48:48,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 00:48:48,314 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:48:48,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:48:48,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1044233828, now seen corresponding path program 1 times [2023-11-29 00:48:48,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:48:48,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739347141] [2023-11-29 00:48:48,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:48:48,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:48:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:48:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:48:48,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:48:48,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739347141] [2023-11-29 00:48:48,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739347141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:48:48,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:48:48,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:48:48,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781267260] [2023-11-29 00:48:48,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:48:48,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:48:48,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:48:48,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:48:48,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:48:48,451 INFO L87 Difference]: Start difference. First operand 54632 states and 78436 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:49,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:48:49,742 INFO L93 Difference]: Finished difference Result 80780 states and 115830 transitions. [2023-11-29 00:48:49,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:48:49,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2023-11-29 00:48:49,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:48:49,771 INFO L225 Difference]: With dead ends: 80780 [2023-11-29 00:48:49,771 INFO L226 Difference]: Without dead ends: 28490 [2023-11-29 00:48:49,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:48:49,795 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 62 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:48:49,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3202 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:48:49,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28490 states. [2023-11-29 00:48:51,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28490 to 28488. [2023-11-29 00:48:51,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28488 states, 28486 states have (on average 1.4301762269184863) internal successors, (40740), 28487 states have internal predecessors, (40740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:51,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28488 states to 28488 states and 40740 transitions. [2023-11-29 00:48:51,424 INFO L78 Accepts]: Start accepts. Automaton has 28488 states and 40740 transitions. Word has length 120 [2023-11-29 00:48:51,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:48:51,424 INFO L495 AbstractCegarLoop]: Abstraction has 28488 states and 40740 transitions. [2023-11-29 00:48:51,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:51,424 INFO L276 IsEmpty]: Start isEmpty. Operand 28488 states and 40740 transitions. [2023-11-29 00:48:51,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 00:48:51,427 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:48:51,427 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:48:51,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 00:48:51,427 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:48:51,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:48:51,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1725158186, now seen corresponding path program 1 times [2023-11-29 00:48:51,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:48:51,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912682267] [2023-11-29 00:48:51,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:48:51,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:48:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:48:51,550 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:48:51,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:48:51,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912682267] [2023-11-29 00:48:51,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912682267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:48:51,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:48:51,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:48:51,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306302944] [2023-11-29 00:48:51,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:48:51,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:48:51,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:48:51,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:48:51,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:48:51,553 INFO L87 Difference]: Start difference. First operand 28488 states and 40740 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:52,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:48:52,403 INFO L93 Difference]: Finished difference Result 41564 states and 59286 transitions. [2023-11-29 00:48:52,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:48:52,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2023-11-29 00:48:52,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:48:52,416 INFO L225 Difference]: With dead ends: 41564 [2023-11-29 00:48:52,417 INFO L226 Difference]: Without dead ends: 15418 [2023-11-29 00:48:52,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:48:52,428 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 59 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:48:52,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 3187 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:48:52,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15418 states. [2023-11-29 00:48:53,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15418 to 15416. [2023-11-29 00:48:53,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15416 states, 15414 states have (on average 1.4301284546516153) internal successors, (22044), 15415 states have internal predecessors, (22044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:53,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15416 states to 15416 states and 22044 transitions. [2023-11-29 00:48:53,241 INFO L78 Accepts]: Start accepts. Automaton has 15416 states and 22044 transitions. Word has length 122 [2023-11-29 00:48:53,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:48:53,242 INFO L495 AbstractCegarLoop]: Abstraction has 15416 states and 22044 transitions. [2023-11-29 00:48:53,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:53,242 INFO L276 IsEmpty]: Start isEmpty. Operand 15416 states and 22044 transitions. [2023-11-29 00:48:53,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 00:48:53,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:48:53,243 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:48:53,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 00:48:53,243 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:48:53,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:48:53,244 INFO L85 PathProgramCache]: Analyzing trace with hash 243244600, now seen corresponding path program 1 times [2023-11-29 00:48:53,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:48:53,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446177599] [2023-11-29 00:48:53,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:48:53,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:48:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:48:53,364 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:48:53,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:48:53,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446177599] [2023-11-29 00:48:53,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446177599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:48:53,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:48:53,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:48:53,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26045768] [2023-11-29 00:48:53,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:48:53,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:48:53,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:48:53,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:48:53,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:48:53,366 INFO L87 Difference]: Start difference. First operand 15416 states and 22044 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:53,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:48:53,670 INFO L93 Difference]: Finished difference Result 21956 states and 31242 transitions. [2023-11-29 00:48:53,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:48:53,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2023-11-29 00:48:53,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:48:53,678 INFO L225 Difference]: With dead ends: 21956 [2023-11-29 00:48:53,678 INFO L226 Difference]: Without dead ends: 8882 [2023-11-29 00:48:53,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:48:53,683 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 56 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:48:53,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3172 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:48:53,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8882 states. [2023-11-29 00:48:54,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8882 to 8880. [2023-11-29 00:48:54,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8880 states, 8878 states have (on average 1.4386123000675828) internal successors, (12772), 8879 states have internal predecessors, (12772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:54,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8880 states to 8880 states and 12772 transitions. [2023-11-29 00:48:54,157 INFO L78 Accepts]: Start accepts. Automaton has 8880 states and 12772 transitions. Word has length 124 [2023-11-29 00:48:54,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:48:54,157 INFO L495 AbstractCegarLoop]: Abstraction has 8880 states and 12772 transitions. [2023-11-29 00:48:54,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:54,157 INFO L276 IsEmpty]: Start isEmpty. Operand 8880 states and 12772 transitions. [2023-11-29 00:48:54,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-29 00:48:54,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:48:54,159 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:48:54,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 00:48:54,159 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:48:54,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:48:54,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1477279034, now seen corresponding path program 1 times [2023-11-29 00:48:54,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:48:54,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533787385] [2023-11-29 00:48:54,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:48:54,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:48:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:48:54,264 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:48:54,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:48:54,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533787385] [2023-11-29 00:48:54,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533787385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:48:54,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:48:54,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:48:54,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953060345] [2023-11-29 00:48:54,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:48:54,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:48:54,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:48:54,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:48:54,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:48:54,266 INFO L87 Difference]: Start difference. First operand 8880 states and 12772 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:54,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:48:54,432 INFO L93 Difference]: Finished difference Result 12152 states and 17334 transitions. [2023-11-29 00:48:54,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:48:54,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-11-29 00:48:54,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:48:54,438 INFO L225 Difference]: With dead ends: 12152 [2023-11-29 00:48:54,438 INFO L226 Difference]: Without dead ends: 5614 [2023-11-29 00:48:54,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:48:54,443 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 53 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:48:54,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3157 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:48:54,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5614 states. [2023-11-29 00:48:54,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5614 to 5612. [2023-11-29 00:48:54,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5612 states, 5610 states have (on average 1.4570409982174688) internal successors, (8174), 5611 states have internal predecessors, (8174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:54,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5612 states to 5612 states and 8174 transitions. [2023-11-29 00:48:54,621 INFO L78 Accepts]: Start accepts. Automaton has 5612 states and 8174 transitions. Word has length 126 [2023-11-29 00:48:54,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:48:54,621 INFO L495 AbstractCegarLoop]: Abstraction has 5612 states and 8174 transitions. [2023-11-29 00:48:54,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:54,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5612 states and 8174 transitions. [2023-11-29 00:48:54,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-29 00:48:54,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:48:54,622 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:48:54,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 00:48:54,623 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:48:54,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:48:54,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1091477292, now seen corresponding path program 1 times [2023-11-29 00:48:54,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:48:54,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696864159] [2023-11-29 00:48:54,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:48:54,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:48:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:48:54,748 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:48:54,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:48:54,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696864159] [2023-11-29 00:48:54,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696864159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:48:54,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:48:54,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:48:54,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887033982] [2023-11-29 00:48:54,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:48:54,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:48:54,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:48:54,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:48:54,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:48:54,751 INFO L87 Difference]: Start difference. First operand 5612 states and 8174 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:54,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:48:54,851 INFO L93 Difference]: Finished difference Result 7250 states and 10437 transitions. [2023-11-29 00:48:54,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:48:54,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2023-11-29 00:48:54,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:48:54,856 INFO L225 Difference]: With dead ends: 7250 [2023-11-29 00:48:54,856 INFO L226 Difference]: Without dead ends: 3980 [2023-11-29 00:48:54,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:48:54,858 INFO L413 NwaCegarLoop]: 1612 mSDtfsCounter, 50 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:48:54,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3142 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:48:54,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2023-11-29 00:48:54,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 3978. [2023-11-29 00:48:54,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3978 states, 3976 states have (on average 1.482394366197183) internal successors, (5894), 3977 states have internal predecessors, (5894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:54,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 5894 transitions. [2023-11-29 00:48:54,958 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 5894 transitions. Word has length 128 [2023-11-29 00:48:54,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:48:54,958 INFO L495 AbstractCegarLoop]: Abstraction has 3978 states and 5894 transitions. [2023-11-29 00:48:54,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:54,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 5894 transitions. [2023-11-29 00:48:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-29 00:48:54,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:48:54,959 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:48:54,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 00:48:54,959 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:48:54,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:48:54,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1982261150, now seen corresponding path program 1 times [2023-11-29 00:48:54,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:48:54,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581243262] [2023-11-29 00:48:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:48:54,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:48:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:48:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:48:56,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:48:56,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581243262] [2023-11-29 00:48:56,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581243262] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:48:56,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965760920] [2023-11-29 00:48:56,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:48:56,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:48:56,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:48:56,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:48:56,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:48:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:48:56,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:48:56,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:48:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:48:56,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:48:57,125 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:48:57,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965760920] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:48:57,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:48:57,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-11-29 00:48:57,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242078109] [2023-11-29 00:48:57,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:48:57,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 00:48:57,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:48:57,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 00:48:57,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:48:57,129 INFO L87 Difference]: Start difference. First operand 3978 states and 5894 transitions. Second operand has 18 states, 18 states have (on average 20.88888888888889) internal successors, (376), 18 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:00,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:49:00,053 INFO L93 Difference]: Finished difference Result 15357 states and 21091 transitions. [2023-11-29 00:49:00,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 00:49:00,054 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 20.88888888888889) internal successors, (376), 18 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-11-29 00:49:00,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:49:00,066 INFO L225 Difference]: With dead ends: 15357 [2023-11-29 00:49:00,066 INFO L226 Difference]: Without dead ends: 13721 [2023-11-29 00:49:00,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 00:49:00,071 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 17982 mSDsluCounter, 6651 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17982 SdHoareTripleChecker+Valid, 8207 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:49:00,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17982 Valid, 8207 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 00:49:00,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13721 states. [2023-11-29 00:49:00,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13721 to 13169. [2023-11-29 00:49:00,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13169 states, 13167 states have (on average 1.3599149388623073) internal successors, (17906), 13168 states have internal predecessors, (17906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13169 states to 13169 states and 17906 transitions. [2023-11-29 00:49:00,650 INFO L78 Accepts]: Start accepts. Automaton has 13169 states and 17906 transitions. Word has length 130 [2023-11-29 00:49:00,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:49:00,651 INFO L495 AbstractCegarLoop]: Abstraction has 13169 states and 17906 transitions. [2023-11-29 00:49:00,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.88888888888889) internal successors, (376), 18 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:00,651 INFO L276 IsEmpty]: Start isEmpty. Operand 13169 states and 17906 transitions. [2023-11-29 00:49:00,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 00:49:00,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:49:00,652 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:49:00,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:49:00,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 00:49:00,853 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:49:00,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:49:00,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1772755094, now seen corresponding path program 1 times [2023-11-29 00:49:00,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:49:00,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101392314] [2023-11-29 00:49:00,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:49:00,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:49:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:49:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:49:01,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:49:01,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101392314] [2023-11-29 00:49:01,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101392314] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:49:01,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10041741] [2023-11-29 00:49:01,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:49:01,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:49:01,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:49:01,862 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:49:01,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:49:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:49:02,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:49:02,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:49:02,754 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:49:02,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:49:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:49:03,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10041741] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:49:03,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:49:03,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-11-29 00:49:03,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228275695] [2023-11-29 00:49:03,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:49:03,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 00:49:03,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:49:03,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 00:49:03,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2023-11-29 00:49:03,930 INFO L87 Difference]: Start difference. First operand 13169 states and 17906 transitions. Second operand has 29 states, 29 states have (on average 12.586206896551724) internal successors, (365), 28 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:08,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:49:08,996 INFO L93 Difference]: Finished difference Result 63330 states and 84092 transitions. [2023-11-29 00:49:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-29 00:49:08,997 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 12.586206896551724) internal successors, (365), 28 states have internal predecessors, (365), 0 states have call successors, (0), 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 131 [2023-11-29 00:49:08,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:49:09,043 INFO L225 Difference]: With dead ends: 63330 [2023-11-29 00:49:09,043 INFO L226 Difference]: Without dead ends: 52818 [2023-11-29 00:49:09,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=914, Invalid=3642, Unknown=0, NotChecked=0, Total=4556 [2023-11-29 00:49:09,056 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 21683 mSDsluCounter, 8435 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21683 SdHoareTripleChecker+Valid, 9987 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:49:09,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21683 Valid, 9987 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 00:49:09,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52818 states. [2023-11-29 00:49:11,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52818 to 50318. [2023-11-29 00:49:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50318 states, 50316 states have (on average 1.3194808808331346) internal successors, (66391), 50317 states have internal predecessors, (66391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:11,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50318 states to 50318 states and 66391 transitions. [2023-11-29 00:49:11,394 INFO L78 Accepts]: Start accepts. Automaton has 50318 states and 66391 transitions. Word has length 131 [2023-11-29 00:49:11,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:49:11,394 INFO L495 AbstractCegarLoop]: Abstraction has 50318 states and 66391 transitions. [2023-11-29 00:49:11,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 12.586206896551724) internal successors, (365), 28 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:11,395 INFO L276 IsEmpty]: Start isEmpty. Operand 50318 states and 66391 transitions. [2023-11-29 00:49:11,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 00:49:11,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:49:11,396 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:49:11,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:49:11,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 00:49:11,597 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:49:11,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:49:11,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1486537066, now seen corresponding path program 1 times [2023-11-29 00:49:11,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:49:11,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295005150] [2023-11-29 00:49:11,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:49:11,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:49:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:49:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:49:13,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:49:13,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295005150] [2023-11-29 00:49:13,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295005150] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:49:13,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496076700] [2023-11-29 00:49:13,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:49:13,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:49:13,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:49:13,631 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:49:13,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:49:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:49:13,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:49:13,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:49:14,305 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:49:14,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:49:15,415 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:49:15,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496076700] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:49:15,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:49:15,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 26 [2023-11-29 00:49:15,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191392449] [2023-11-29 00:49:15,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:49:15,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 00:49:15,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:49:15,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 00:49:15,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2023-11-29 00:49:15,418 INFO L87 Difference]: Start difference. First operand 50318 states and 66391 transitions. Second operand has 27 states, 27 states have (on average 12.481481481481481) internal successors, (337), 26 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:20,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:49:20,095 INFO L93 Difference]: Finished difference Result 147726 states and 193318 transitions. [2023-11-29 00:49:20,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:49:20,096 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 12.481481481481481) internal successors, (337), 26 states have internal predecessors, (337), 0 states have call successors, (0), 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 131 [2023-11-29 00:49:20,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:49:20,205 INFO L225 Difference]: With dead ends: 147726 [2023-11-29 00:49:20,205 INFO L226 Difference]: Without dead ends: 105122 [2023-11-29 00:49:20,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=327, Invalid=1079, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 00:49:20,238 INFO L413 NwaCegarLoop]: 1550 mSDtfsCounter, 17523 mSDsluCounter, 4986 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17523 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:49:20,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17523 Valid, 6536 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:49:20,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105122 states. [2023-11-29 00:49:25,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105122 to 99726. [2023-11-29 00:49:25,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99726 states, 99724 states have (on average 1.298754562592756) internal successors, (129517), 99725 states have internal predecessors, (129517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:25,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99726 states to 99726 states and 129517 transitions. [2023-11-29 00:49:25,183 INFO L78 Accepts]: Start accepts. Automaton has 99726 states and 129517 transitions. Word has length 131 [2023-11-29 00:49:25,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:49:25,184 INFO L495 AbstractCegarLoop]: Abstraction has 99726 states and 129517 transitions. [2023-11-29 00:49:25,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 12.481481481481481) internal successors, (337), 26 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:25,184 INFO L276 IsEmpty]: Start isEmpty. Operand 99726 states and 129517 transitions. [2023-11-29 00:49:25,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 00:49:25,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:49:25,187 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:49:25,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:49:25,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 00:49:25,387 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:49:25,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:49:25,388 INFO L85 PathProgramCache]: Analyzing trace with hash -443706476, now seen corresponding path program 1 times [2023-11-29 00:49:25,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:49:25,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073715750] [2023-11-29 00:49:25,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:49:25,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:49:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:49:26,593 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:49:26,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:49:26,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073715750] [2023-11-29 00:49:26,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073715750] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:49:26,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014109135] [2023-11-29 00:49:26,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:49:26,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:49:26,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:49:26,594 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:49:26,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:49:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:49:26,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:49:26,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:49:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:49:27,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:49:28,634 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:49:28,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014109135] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:49:28,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:49:28,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-11-29 00:49:28,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23022542] [2023-11-29 00:49:28,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:49:28,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 00:49:28,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:49:28,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 00:49:28,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2023-11-29 00:49:28,637 INFO L87 Difference]: Start difference. First operand 99726 states and 129517 transitions. Second operand has 28 states, 28 states have (on average 12.678571428571429) internal successors, (355), 27 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:41,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:49:41,375 INFO L93 Difference]: Finished difference Result 308444 states and 396842 transitions. [2023-11-29 00:49:41,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 00:49:41,375 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 12.678571428571429) internal successors, (355), 27 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2023-11-29 00:49:41,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:49:41,608 INFO L225 Difference]: With dead ends: 308444 [2023-11-29 00:49:41,608 INFO L226 Difference]: Without dead ends: 216486 [2023-11-29 00:49:41,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=697, Invalid=2963, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 00:49:41,639 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 26726 mSDsluCounter, 7997 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26726 SdHoareTripleChecker+Valid, 9624 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:49:41,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26726 Valid, 9624 Invalid, 2393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 00:49:41,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216486 states. [2023-11-29 00:49:51,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216486 to 179392. [2023-11-29 00:49:51,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179392 states, 179390 states have (on average 1.2779865098388985) internal successors, (229258), 179391 states have internal predecessors, (229258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179392 states to 179392 states and 229258 transitions. [2023-11-29 00:49:51,877 INFO L78 Accepts]: Start accepts. Automaton has 179392 states and 229258 transitions. Word has length 132 [2023-11-29 00:49:51,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:49:51,877 INFO L495 AbstractCegarLoop]: Abstraction has 179392 states and 229258 transitions. [2023-11-29 00:49:51,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.678571428571429) internal successors, (355), 27 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:51,878 INFO L276 IsEmpty]: Start isEmpty. Operand 179392 states and 229258 transitions. [2023-11-29 00:49:51,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 00:49:51,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:49:51,882 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:49:51,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:49:52,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 00:49:52,082 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:49:52,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:49:52,083 INFO L85 PathProgramCache]: Analyzing trace with hash -746251446, now seen corresponding path program 1 times [2023-11-29 00:49:52,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:49:52,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529800871] [2023-11-29 00:49:52,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:49:52,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:49:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:49:53,557 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:49:53,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:49:53,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529800871] [2023-11-29 00:49:53,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529800871] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:49:53,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827515807] [2023-11-29 00:49:53,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:49:53,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:49:53,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:49:53,558 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:49:53,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:49:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:49:53,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:49:53,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:49:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:49:54,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:49:55,533 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:49:55,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827515807] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:49:55,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:49:55,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-11-29 00:49:55,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741420663] [2023-11-29 00:49:55,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:49:55,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 00:49:55,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:49:55,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 00:49:55,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-11-29 00:49:55,536 INFO L87 Difference]: Start difference. First operand 179392 states and 229258 transitions. Second operand has 28 states, 28 states have (on average 11.678571428571429) internal successors, (327), 27 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:22,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:50:22,304 INFO L93 Difference]: Finished difference Result 714860 states and 915036 transitions. [2023-11-29 00:50:22,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-29 00:50:22,305 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.678571428571429) internal successors, (327), 27 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-11-29 00:50:22,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:50:23,112 INFO L225 Difference]: With dead ends: 714860 [2023-11-29 00:50:23,112 INFO L226 Difference]: Without dead ends: 551120 [2023-11-29 00:50:23,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=783, Invalid=3507, Unknown=0, NotChecked=0, Total=4290 [2023-11-29 00:50:23,198 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 20329 mSDsluCounter, 8825 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20329 SdHoareTripleChecker+Valid, 10378 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:50:23,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20329 Valid, 10378 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 00:50:23,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551120 states. [2023-11-29 00:50:44,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551120 to 350284. [2023-11-29 00:50:44,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350284 states, 350282 states have (on average 1.2729086850023694) internal successors, (445877), 350283 states have internal predecessors, (445877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:45,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350284 states to 350284 states and 445877 transitions. [2023-11-29 00:50:45,214 INFO L78 Accepts]: Start accepts. Automaton has 350284 states and 445877 transitions. Word has length 133 [2023-11-29 00:50:45,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:50:45,214 INFO L495 AbstractCegarLoop]: Abstraction has 350284 states and 445877 transitions. [2023-11-29 00:50:45,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.678571428571429) internal successors, (327), 27 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:45,214 INFO L276 IsEmpty]: Start isEmpty. Operand 350284 states and 445877 transitions. [2023-11-29 00:50:45,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 00:50:45,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:50:45,220 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:50:45,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:50:45,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 00:50:45,421 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:50:45,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:50:45,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1069814770, now seen corresponding path program 1 times [2023-11-29 00:50:45,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:50:45,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171987164] [2023-11-29 00:50:45,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:50:45,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:50:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:50:45,568 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:50:45,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:50:45,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171987164] [2023-11-29 00:50:45,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171987164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:50:45,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:50:45,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:50:45,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776131107] [2023-11-29 00:50:45,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:50:45,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:50:45,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:50:45,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:50:45,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:50:45,570 INFO L87 Difference]: Start difference. First operand 350284 states and 445877 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:07,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:51:07,948 INFO L93 Difference]: Finished difference Result 353327 states and 451525 transitions. [2023-11-29 00:51:07,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:51:07,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-11-29 00:51:07,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:51:08,401 INFO L225 Difference]: With dead ends: 353327 [2023-11-29 00:51:08,401 INFO L226 Difference]: Without dead ends: 351786 [2023-11-29 00:51:08,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:51:08,427 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 849 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 3809 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 4473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:51:08,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1029 Invalid, 4473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3809 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-29 00:51:08,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351786 states. [2023-11-29 00:51:28,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351786 to 351786. [2023-11-29 00:51:28,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351786 states, 351784 states have (on average 1.2719594978736952) internal successors, (447455), 351785 states have internal predecessors, (447455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351786 states to 351786 states and 447455 transitions. [2023-11-29 00:51:29,190 INFO L78 Accepts]: Start accepts. Automaton has 351786 states and 447455 transitions. Word has length 133 [2023-11-29 00:51:29,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:51:29,190 INFO L495 AbstractCegarLoop]: Abstraction has 351786 states and 447455 transitions. [2023-11-29 00:51:29,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:29,191 INFO L276 IsEmpty]: Start isEmpty. Operand 351786 states and 447455 transitions. [2023-11-29 00:51:29,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-29 00:51:29,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:51:29,196 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:51:29,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-29 00:51:29,196 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:51:29,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:51:29,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1124655700, now seen corresponding path program 1 times [2023-11-29 00:51:29,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:51:29,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783730154] [2023-11-29 00:51:29,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:51:29,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:51:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:51:30,679 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:51:30,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:51:30,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783730154] [2023-11-29 00:51:30,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783730154] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:51:30,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792466722] [2023-11-29 00:51:30,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:51:30,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:51:30,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:51:30,681 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:51:30,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:51:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:51:30,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 00:51:30,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:51:31,880 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:51:31,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:51:33,505 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:51:33,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792466722] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:51:33,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:51:33,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-11-29 00:51:33,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702311359] [2023-11-29 00:51:33,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:51:33,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 00:51:33,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:51:33,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 00:51:33,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 00:51:33,508 INFO L87 Difference]: Start difference. First operand 351786 states and 447455 transitions. Second operand has 33 states, 33 states have (on average 11.666666666666666) internal successors, (385), 33 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:52:35,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:52:35,021 INFO L93 Difference]: Finished difference Result 1691662 states and 2161433 transitions. [2023-11-29 00:52:35,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-29 00:52:35,022 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 11.666666666666666) internal successors, (385), 33 states have internal predecessors, (385), 0 states have call successors, (0), 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 134 [2023-11-29 00:52:35,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:52:36,878 INFO L225 Difference]: With dead ends: 1691662 [2023-11-29 00:52:36,878 INFO L226 Difference]: Without dead ends: 1353159 [2023-11-29 00:52:37,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1531 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1186, Invalid=5134, Unknown=0, NotChecked=0, Total=6320 [2023-11-29 00:52:37,136 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 21135 mSDsluCounter, 8543 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21135 SdHoareTripleChecker+Valid, 10056 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:52:37,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21135 Valid, 10056 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 00:52:37,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353159 states. [2023-11-29 00:53:41,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353159 to 1270081. [2023-11-29 00:53:43,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270081 states, 1270079 states have (on average 1.2724106138279587) internal successors, (1616062), 1270080 states have internal predecessors, (1616062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270081 states to 1270081 states and 1616062 transitions. [2023-11-29 00:53:46,000 INFO L78 Accepts]: Start accepts. Automaton has 1270081 states and 1616062 transitions. Word has length 134 [2023-11-29 00:53:46,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:53:46,000 INFO L495 AbstractCegarLoop]: Abstraction has 1270081 states and 1616062 transitions. [2023-11-29 00:53:46,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 11.666666666666666) internal successors, (385), 33 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:46,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1270081 states and 1616062 transitions. [2023-11-29 00:53:46,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 00:53:46,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:53:46,010 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:53:46,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:53:46,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 00:53:46,211 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:53:46,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:46,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1148466790, now seen corresponding path program 1 times [2023-11-29 00:53:46,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:46,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728238149] [2023-11-29 00:53:46,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:46,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:53:46,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:46,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728238149] [2023-11-29 00:53:46,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728238149] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:53:46,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471086139] [2023-11-29 00:53:46,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:46,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:46,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:53:46,984 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:53:46,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0a50863-343d-4974-8f68-ad807c73fea5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process