./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/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_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/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_c6682f76-f787-45df-9c02-7a3473f0db40/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 163b1e4f0aac9bc589d5c69fa383b82ca836f7f4fc72d1577e6f9bf24923b682 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:41:11,461 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:41:11,524 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-28 23:41:11,530 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:41:11,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:41:11,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:41:11,558 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:41:11,558 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:41:11,559 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:41:11,559 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:41:11,560 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:41:11,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:41:11,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:41:11,562 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:41:11,562 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:41:11,563 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:41:11,563 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:41:11,564 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:41:11,564 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:41:11,564 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:41:11,565 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:41:11,566 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:41:11,566 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:41:11,567 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:41:11,567 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:41:11,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:41:11,568 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:41:11,569 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:41:11,569 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:41:11,569 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:41:11,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:41:11,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:41:11,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:41:11,571 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:41:11,571 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:41:11,571 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:41:11,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:41:11,571 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:41:11,572 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:41:11,572 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:41:11,572 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:41:11,572 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:41:11,573 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_c6682f76-f787-45df-9c02-7a3473f0db40/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 163b1e4f0aac9bc589d5c69fa383b82ca836f7f4fc72d1577e6f9bf24923b682 [2023-11-28 23:41:11,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:41:11,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:41:11,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:41:11,815 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:41:11,815 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:41:11,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2023-11-28 23:41:14,580 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:41:14,954 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:41:14,954 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2023-11-28 23:41:14,978 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/data/a4d31ca4d/5e7a3dde166f44539ff7a806262a5952/FLAG898e06d84 [2023-11-28 23:41:14,992 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/data/a4d31ca4d/5e7a3dde166f44539ff7a806262a5952 [2023-11-28 23:41:14,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:41:14,996 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:41:14,997 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:41:14,997 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:41:15,002 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:41:15,002 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:41:14" (1/1) ... [2023-11-28 23:41:15,003 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47bdbc0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:41:15, skipping insertion in model container [2023-11-28 23:41:15,003 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:41:14" (1/1) ... [2023-11-28 23:41:15,151 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:41:15,475 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_c6682f76-f787-45df-9c02-7a3473f0db40/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[11742,11755] [2023-11-28 23:41:15,535 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_c6682f76-f787-45df-9c02-7a3473f0db40/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[19490,19503] [2023-11-28 23:41:16,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:41:16,303 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:41:16,337 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_c6682f76-f787-45df-9c02-7a3473f0db40/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[11742,11755] [2023-11-28 23:41:16,350 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_c6682f76-f787-45df-9c02-7a3473f0db40/sv-benchmarks/c/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c[19490,19503] [2023-11-28 23:41:16,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:41:16,875 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:41:16,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:41:16 WrapperNode [2023-11-28 23:41:16,876 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:41:16,877 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:41:16,877 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:41:16,877 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:41:16,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:41:16" (1/1) ... [2023-11-28 23:41:16,928 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:41:16" (1/1) ... [2023-11-28 23:41:17,208 INFO L138 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5089 [2023-11-28 23:41:17,209 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:41:17,209 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:41:17,209 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:41:17,210 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:41:17,218 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:41:16" (1/1) ... [2023-11-28 23:41:17,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:41:16" (1/1) ... [2023-11-28 23:41:17,247 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:41:16" (1/1) ... [2023-11-28 23:41:17,376 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]. [2023-11-28 23:41:17,377 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:41:16" (1/1) ... [2023-11-28 23:41:17,377 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:41:16" (1/1) ... [2023-11-28 23:41:17,505 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:41:16" (1/1) ... [2023-11-28 23:41:17,531 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:41:16" (1/1) ... [2023-11-28 23:41:17,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:41:16" (1/1) ... [2023-11-28 23:41:17,601 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:41:16" (1/1) ... [2023-11-28 23:41:17,723 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:41:17,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:41:17,725 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:41:17,725 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:41:17,726 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:41:16" (1/1) ... [2023-11-28 23:41:17,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:41:17,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:41:17,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:41:17,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:41:17,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:41:17,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:41:17,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:41:17,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:41:17,910 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:41:17,913 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:41:22,742 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:41:22,805 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:41:22,805 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-28 23:41:22,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:41:22 BoogieIcfgContainer [2023-11-28 23:41:22,806 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:41:22,809 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:41:22,809 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:41:22,812 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:41:22,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:41:14" (1/3) ... [2023-11-28 23:41:22,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8d776d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:41:22, skipping insertion in model container [2023-11-28 23:41:22,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:41:16" (2/3) ... [2023-11-28 23:41:22,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8d776d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:41:22, skipping insertion in model container [2023-11-28 23:41:22,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:41:22" (3/3) ... [2023-11-28 23:41:22,815 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label09.c [2023-11-28 23:41:22,834 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:41:22,835 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-28 23:41:22,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:41:22,914 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;@33f15a4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:41:22,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-28 23:41:22,923 INFO L276 IsEmpty]: Start isEmpty. Operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:22,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-28 23:41:22,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:22,933 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] [2023-11-28 23:41:22,933 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:22,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:22,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1603356568, now seen corresponding path program 1 times [2023-11-28 23:41:22,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:22,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891289229] [2023-11-28 23:41:22,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:22,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:23,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:23,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:23,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891289229] [2023-11-28 23:41:23,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891289229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:23,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:23,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:41:23,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615057745] [2023-11-28 23:41:23,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:23,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-28 23:41:23,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:23,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-28 23:41:23,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 23:41:23,181 INFO L87 Difference]: Start difference. First operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:23,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:23,275 INFO L93 Difference]: Finished difference Result 1632 states and 3215 transitions. [2023-11-28 23:41:23,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-28 23:41:23,277 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-11-28 23:41:23,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:23,296 INFO L225 Difference]: With dead ends: 1632 [2023-11-28 23:41:23,297 INFO L226 Difference]: Without dead ends: 830 [2023-11-28 23:41:23,303 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 [2023-11-28 23:41:23,306 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:23,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1570 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:41:23,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-11-28 23:41:23,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-11-28 23:41:23,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8973429951690821) internal successors, (1571), 829 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:23,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1571 transitions. [2023-11-28 23:41:23,386 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1571 transitions. Word has length 21 [2023-11-28 23:41:23,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:23,387 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1571 transitions. [2023-11-28 23:41:23,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:23,387 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1571 transitions. [2023-11-28 23:41:23,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-28 23:41:23,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:23,388 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] [2023-11-28 23:41:23,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:41:23,389 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:23,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:23,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1103262826, now seen corresponding path program 1 times [2023-11-28 23:41:23,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:23,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239132308] [2023-11-28 23:41:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:23,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:23,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:23,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:23,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239132308] [2023-11-28 23:41:23,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239132308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:23,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:23,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:41:23,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360580620] [2023-11-28 23:41:23,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:23,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:41:23,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:23,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:41:23,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:41:23,672 INFO L87 Difference]: Start difference. First operand 830 states and 1571 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:23,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:23,768 INFO L93 Difference]: Finished difference Result 874 states and 1640 transitions. [2023-11-28 23:41:23,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:41:23,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-11-28 23:41:23,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:23,774 INFO L225 Difference]: With dead ends: 874 [2023-11-28 23:41:23,775 INFO L226 Difference]: Without dead ends: 830 [2023-11-28 23:41:23,775 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 [2023-11-28 23:41:23,777 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 0 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:23,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4669 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:41:23,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-11-28 23:41:23,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-11-28 23:41:23,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8599033816425121) internal successors, (1540), 829 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1540 transitions. [2023-11-28 23:41:23,805 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1540 transitions. Word has length 21 [2023-11-28 23:41:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:23,806 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1540 transitions. [2023-11-28 23:41:23,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:23,806 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1540 transitions. [2023-11-28 23:41:23,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-28 23:41:23,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:23,808 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] [2023-11-28 23:41:23,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 23:41:23,809 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:23,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:23,809 INFO L85 PathProgramCache]: Analyzing trace with hash 51546625, now seen corresponding path program 1 times [2023-11-28 23:41:23,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:23,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122748672] [2023-11-28 23:41:23,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:23,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:23,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:23,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:23,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122748672] [2023-11-28 23:41:23,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122748672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:23,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:23,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:41:23,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814965545] [2023-11-28 23:41:23,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:23,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:41:23,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:23,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:41:23,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:41:23,972 INFO L87 Difference]: Start difference. First operand 830 states and 1540 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:24,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:24,284 INFO L93 Difference]: Finished difference Result 1240 states and 2200 transitions. [2023-11-28 23:41:24,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:41:24,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-11-28 23:41:24,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:24,293 INFO L225 Difference]: With dead ends: 1240 [2023-11-28 23:41:24,293 INFO L226 Difference]: Without dead ends: 1199 [2023-11-28 23:41:24,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:41:24,295 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 7933 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7933 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:24,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7933 Valid, 2700 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:41:24,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2023-11-28 23:41:24,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 869. [2023-11-28 23:41:24,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 867 states have (on average 1.8489042675893888) internal successors, (1603), 868 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:24,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1603 transitions. [2023-11-28 23:41:24,329 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1603 transitions. Word has length 51 [2023-11-28 23:41:24,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:24,330 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1603 transitions. [2023-11-28 23:41:24,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:24,330 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1603 transitions. [2023-11-28 23:41:24,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-28 23:41:24,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:24,333 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] [2023-11-28 23:41:24,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 23:41:24,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:24,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:24,334 INFO L85 PathProgramCache]: Analyzing trace with hash 2145916561, now seen corresponding path program 1 times [2023-11-28 23:41:24,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:24,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529839037] [2023-11-28 23:41:24,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:24,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:24,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:24,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:24,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529839037] [2023-11-28 23:41:24,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529839037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:24,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:24,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:41:24,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293823630] [2023-11-28 23:41:24,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:24,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:41:24,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:24,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:41:24,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:41:24,423 INFO L87 Difference]: Start difference. First operand 869 states and 1603 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:24,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:24,469 INFO L93 Difference]: Finished difference Result 1018 states and 1842 transitions. [2023-11-28 23:41:24,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:41:24,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-11-28 23:41:24,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:24,477 INFO L225 Difference]: With dead ends: 1018 [2023-11-28 23:41:24,477 INFO L226 Difference]: Without dead ends: 938 [2023-11-28 23:41:24,478 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 [2023-11-28 23:41:24,479 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1480 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1595 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 [2023-11-28 23:41:24,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1595 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:41:24,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-11-28 23:41:24,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2023-11-28 23:41:24,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 934 states have (on average 1.8297644539614561) internal successors, (1709), 935 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:24,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1709 transitions. [2023-11-28 23:41:24,510 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1709 transitions. Word has length 53 [2023-11-28 23:41:24,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:24,511 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1709 transitions. [2023-11-28 23:41:24,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:24,511 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1709 transitions. [2023-11-28 23:41:24,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-28 23:41:24,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:24,514 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] [2023-11-28 23:41:24,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 23:41:24,514 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:24,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:24,515 INFO L85 PathProgramCache]: Analyzing trace with hash -2146905783, now seen corresponding path program 1 times [2023-11-28 23:41:24,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:24,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761206716] [2023-11-28 23:41:24,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:24,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:24,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:24,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761206716] [2023-11-28 23:41:24,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761206716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:24,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:24,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:41:24,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138781187] [2023-11-28 23:41:24,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:24,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:41:24,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:24,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:41:24,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:41:24,787 INFO L87 Difference]: Start difference. First operand 936 states and 1709 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:25,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:25,008 INFO L93 Difference]: Finished difference Result 1085 states and 1945 transitions. [2023-11-28 23:41:25,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:41:25,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-11-28 23:41:25,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:25,015 INFO L225 Difference]: With dead ends: 1085 [2023-11-28 23:41:25,015 INFO L226 Difference]: Without dead ends: 938 [2023-11-28 23:41:25,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:41:25,018 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 2990 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2990 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:25,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2990 Valid, 1775 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:41:25,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-11-28 23:41:25,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2023-11-28 23:41:25,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 934 states have (on average 1.8276231263383298) internal successors, (1707), 935 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:25,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1707 transitions. [2023-11-28 23:41:25,049 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1707 transitions. Word has length 53 [2023-11-28 23:41:25,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:25,049 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1707 transitions. [2023-11-28 23:41:25,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:25,050 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1707 transitions. [2023-11-28 23:41:25,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-28 23:41:25,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:25,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:41:25,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 23:41:25,052 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:25,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:25,052 INFO L85 PathProgramCache]: Analyzing trace with hash 2036322024, now seen corresponding path program 1 times [2023-11-28 23:41:25,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:25,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108697146] [2023-11-28 23:41:25,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:25,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:25,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:25,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:25,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108697146] [2023-11-28 23:41:25,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108697146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:25,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:25,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:41:25,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573814112] [2023-11-28 23:41:25,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:25,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:41:25,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:25,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:41:25,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:41:25,273 INFO L87 Difference]: Start difference. First operand 936 states and 1707 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:25,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:25,322 INFO L93 Difference]: Finished difference Result 944 states and 1716 transitions. [2023-11-28 23:41:25,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:41:25,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-11-28 23:41:25,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:25,328 INFO L225 Difference]: With dead ends: 944 [2023-11-28 23:41:25,328 INFO L226 Difference]: Without dead ends: 942 [2023-11-28 23:41:25,329 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 [2023-11-28 23:41:25,330 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4600 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 [2023-11-28 23:41:25,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4600 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:41:25,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2023-11-28 23:41:25,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 940. [2023-11-28 23:41:25,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 938 states have (on average 1.8230277185501067) internal successors, (1710), 939 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:25,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1710 transitions. [2023-11-28 23:41:25,353 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1710 transitions. Word has length 54 [2023-11-28 23:41:25,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:25,353 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1710 transitions. [2023-11-28 23:41:25,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:25,354 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1710 transitions. [2023-11-28 23:41:25,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-28 23:41:25,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:25,355 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] [2023-11-28 23:41:25,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 23:41:25,355 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:25,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:25,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1922958665, now seen corresponding path program 1 times [2023-11-28 23:41:25,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:25,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884019902] [2023-11-28 23:41:25,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:25,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:25,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:25,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884019902] [2023-11-28 23:41:25,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884019902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:25,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:25,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:41:25,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406352735] [2023-11-28 23:41:25,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:25,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:41:25,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:25,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:41:25,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:41:25,412 INFO L87 Difference]: Start difference. First operand 940 states and 1710 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:25,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:25,443 INFO L93 Difference]: Finished difference Result 1102 states and 1963 transitions. [2023-11-28 23:41:25,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:41:25,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-11-28 23:41:25,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:25,449 INFO L225 Difference]: With dead ends: 1102 [2023-11-28 23:41:25,449 INFO L226 Difference]: Without dead ends: 1018 [2023-11-28 23:41:25,450 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 [2023-11-28 23:41:25,451 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1494 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1653 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 [2023-11-28 23:41:25,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:41:25,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2023-11-28 23:41:25,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1016. [2023-11-28 23:41:25,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1014 states have (on average 1.801775147928994) internal successors, (1827), 1015 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:25,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1827 transitions. [2023-11-28 23:41:25,473 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1827 transitions. Word has length 55 [2023-11-28 23:41:25,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:25,473 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1827 transitions. [2023-11-28 23:41:25,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:25,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1827 transitions. [2023-11-28 23:41:25,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-28 23:41:25,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:25,474 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] [2023-11-28 23:41:25,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 23:41:25,475 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:25,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:25,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1694319433, now seen corresponding path program 1 times [2023-11-28 23:41:25,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:25,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686167479] [2023-11-28 23:41:25,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:25,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:25,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:25,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686167479] [2023-11-28 23:41:25,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686167479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:25,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:25,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:41:25,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035289366] [2023-11-28 23:41:25,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:25,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:41:25,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:25,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:41:25,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:41:25,524 INFO L87 Difference]: Start difference. First operand 1016 states and 1827 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:25,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:25,558 INFO L93 Difference]: Finished difference Result 1442 states and 2487 transitions. [2023-11-28 23:41:25,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:41:25,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-11-28 23:41:25,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:25,565 INFO L225 Difference]: With dead ends: 1442 [2023-11-28 23:41:25,565 INFO L226 Difference]: Without dead ends: 1217 [2023-11-28 23:41:25,566 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 [2023-11-28 23:41:25,567 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1490 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1653 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 [2023-11-28 23:41:25,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:41:25,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-11-28 23:41:25,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1215. [2023-11-28 23:41:25,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1213 states have (on average 1.7551525144270403) internal successors, (2129), 1214 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:25,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2129 transitions. [2023-11-28 23:41:25,596 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2129 transitions. Word has length 55 [2023-11-28 23:41:25,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:25,596 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 2129 transitions. [2023-11-28 23:41:25,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:25,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2129 transitions. [2023-11-28 23:41:25,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-28 23:41:25,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:25,597 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] [2023-11-28 23:41:25,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-28 23:41:25,598 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:25,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:25,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1068663369, now seen corresponding path program 1 times [2023-11-28 23:41:25,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:25,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286958869] [2023-11-28 23:41:25,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:25,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:25,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:25,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286958869] [2023-11-28 23:41:25,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286958869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:25,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:25,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:41:25,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614707864] [2023-11-28 23:41:25,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:25,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:41:25,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:25,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:41:25,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:41:25,649 INFO L87 Difference]: Start difference. First operand 1215 states and 2129 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:25,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:25,690 INFO L93 Difference]: Finished difference Result 2015 states and 3351 transitions. [2023-11-28 23:41:25,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:41:25,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-11-28 23:41:25,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:25,697 INFO L225 Difference]: With dead ends: 2015 [2023-11-28 23:41:25,697 INFO L226 Difference]: Without dead ends: 1591 [2023-11-28 23:41:25,698 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 [2023-11-28 23:41:25,699 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1488 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1655 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 [2023-11-28 23:41:25,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1655 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:41:25,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2023-11-28 23:41:25,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1589. [2023-11-28 23:41:25,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1587 states have (on average 1.6918714555765595) internal successors, (2685), 1588 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:25,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2685 transitions. [2023-11-28 23:41:25,736 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2685 transitions. Word has length 55 [2023-11-28 23:41:25,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:25,736 INFO L495 AbstractCegarLoop]: Abstraction has 1589 states and 2685 transitions. [2023-11-28 23:41:25,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:25,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2685 transitions. [2023-11-28 23:41:25,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-28 23:41:25,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:25,737 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] [2023-11-28 23:41:25,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-28 23:41:25,737 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:25,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:25,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1957396809, now seen corresponding path program 1 times [2023-11-28 23:41:25,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:25,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655695289] [2023-11-28 23:41:25,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:25,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:25,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:25,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:25,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655695289] [2023-11-28 23:41:25,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655695289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:25,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:25,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:41:25,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105220377] [2023-11-28 23:41:25,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:25,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:41:25,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:25,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:41:25,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:41:25,782 INFO L87 Difference]: Start difference. First operand 1589 states and 2685 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:25,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:25,833 INFO L93 Difference]: Finished difference Result 3089 states and 4935 transitions. [2023-11-28 23:41:25,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:41:25,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-11-28 23:41:25,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:25,845 INFO L225 Difference]: With dead ends: 3089 [2023-11-28 23:41:25,845 INFO L226 Difference]: Without dead ends: 2291 [2023-11-28 23:41:25,846 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 [2023-11-28 23:41:25,847 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1486 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1657 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 [2023-11-28 23:41:25,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1657 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:41:25,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2023-11-28 23:41:25,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2289. [2023-11-28 23:41:25,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2287 states have (on average 1.6182772190642762) internal successors, (3701), 2288 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 3701 transitions. [2023-11-28 23:41:25,900 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 3701 transitions. Word has length 55 [2023-11-28 23:41:25,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:25,901 INFO L495 AbstractCegarLoop]: Abstraction has 2289 states and 3701 transitions. [2023-11-28 23:41:25,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:25,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 3701 transitions. [2023-11-28 23:41:25,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-28 23:41:25,901 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:25,901 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] [2023-11-28 23:41:25,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 23:41:25,902 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:25,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:25,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1654375497, now seen corresponding path program 1 times [2023-11-28 23:41:25,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:25,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527535918] [2023-11-28 23:41:25,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:25,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:25,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:25,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527535918] [2023-11-28 23:41:25,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527535918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:25,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:25,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:41:25,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167665373] [2023-11-28 23:41:25,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:25,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:41:25,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:25,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:41:25,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:41:25,950 INFO L87 Difference]: Start difference. First operand 2289 states and 3701 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:26,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:26,052 INFO L93 Difference]: Finished difference Result 5093 states and 7815 transitions. [2023-11-28 23:41:26,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:41:26,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-11-28 23:41:26,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:26,068 INFO L225 Difference]: With dead ends: 5093 [2023-11-28 23:41:26,068 INFO L226 Difference]: Without dead ends: 3595 [2023-11-28 23:41:26,070 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 [2023-11-28 23:41:26,070 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 1492 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1659 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 [2023-11-28 23:41:26,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:41:26,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2023-11-28 23:41:26,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 3593. [2023-11-28 23:41:26,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 3591 states have (on average 1.5430242272347536) internal successors, (5541), 3592 states have internal predecessors, (5541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:26,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 5541 transitions. [2023-11-28 23:41:26,156 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 5541 transitions. Word has length 55 [2023-11-28 23:41:26,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:26,156 INFO L495 AbstractCegarLoop]: Abstraction has 3593 states and 5541 transitions. [2023-11-28 23:41:26,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:26,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 5541 transitions. [2023-11-28 23:41:26,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-28 23:41:26,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:26,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:41:26,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-28 23:41:26,157 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:26,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:26,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1483191019, now seen corresponding path program 1 times [2023-11-28 23:41:26,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:26,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105068104] [2023-11-28 23:41:26,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:26,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:26,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:26,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105068104] [2023-11-28 23:41:26,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105068104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:26,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:26,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:41:26,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290724263] [2023-11-28 23:41:26,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:26,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:41:26,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:26,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:41:26,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:41:26,281 INFO L87 Difference]: Start difference. First operand 3593 states and 5541 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:32,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:32,857 INFO L93 Difference]: Finished difference Result 5848 states and 9850 transitions. [2023-11-28 23:41:32,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:41:32,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-28 23:41:32,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:32,883 INFO L225 Difference]: With dead ends: 5848 [2023-11-28 23:41:32,883 INFO L226 Difference]: Without dead ends: 5095 [2023-11-28 23:41:32,885 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 [2023-11-28 23:41:32,886 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 2382 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2382 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:32,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2382 Valid, 791 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-28 23:41:32,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5095 states. [2023-11-28 23:41:33,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5095 to 5095. [2023-11-28 23:41:33,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5095 states, 5093 states have (on average 1.503043392892205) internal successors, (7655), 5094 states have internal predecessors, (7655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:33,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 7655 transitions. [2023-11-28 23:41:33,051 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 7655 transitions. Word has length 66 [2023-11-28 23:41:33,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:33,052 INFO L495 AbstractCegarLoop]: Abstraction has 5095 states and 7655 transitions. [2023-11-28 23:41:33,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:33,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 7655 transitions. [2023-11-28 23:41:33,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-28 23:41:33,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:33,054 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] [2023-11-28 23:41:33,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-28 23:41:33,055 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:33,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:33,055 INFO L85 PathProgramCache]: Analyzing trace with hash 285878162, now seen corresponding path program 1 times [2023-11-28 23:41:33,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:33,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111885000] [2023-11-28 23:41:33,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:33,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:33,235 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:41:33,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:33,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111885000] [2023-11-28 23:41:33,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111885000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:33,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:33,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:41:33,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367503526] [2023-11-28 23:41:33,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:33,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:41:33,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:33,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:41:33,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:41:33,237 INFO L87 Difference]: Start difference. First operand 5095 states and 7655 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:33,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:33,740 INFO L93 Difference]: Finished difference Result 18883 states and 27645 transitions. [2023-11-28 23:41:33,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:41:33,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 73 [2023-11-28 23:41:33,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:33,788 INFO L225 Difference]: With dead ends: 18883 [2023-11-28 23:41:33,789 INFO L226 Difference]: Without dead ends: 16897 [2023-11-28 23:41:33,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:41:33,794 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6291 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6291 SdHoareTripleChecker+Valid, 3561 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:33,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6291 Valid, 3561 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:41:33,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16897 states. [2023-11-28 23:41:34,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16897 to 7495. [2023-11-28 23:41:34,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7495 states, 7493 states have (on average 1.4807153343120245) internal successors, (11095), 7494 states have internal predecessors, (11095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:34,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7495 states to 7495 states and 11095 transitions. [2023-11-28 23:41:34,089 INFO L78 Accepts]: Start accepts. Automaton has 7495 states and 11095 transitions. Word has length 73 [2023-11-28 23:41:34,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:34,089 INFO L495 AbstractCegarLoop]: Abstraction has 7495 states and 11095 transitions. [2023-11-28 23:41:34,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:34,090 INFO L276 IsEmpty]: Start isEmpty. Operand 7495 states and 11095 transitions. [2023-11-28 23:41:34,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-28 23:41:34,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:34,092 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] [2023-11-28 23:41:34,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-28 23:41:34,093 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:34,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:34,093 INFO L85 PathProgramCache]: Analyzing trace with hash 57238930, now seen corresponding path program 1 times [2023-11-28 23:41:34,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:34,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503403711] [2023-11-28 23:41:34,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:34,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:34,213 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-28 23:41:34,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:34,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503403711] [2023-11-28 23:41:34,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503403711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:34,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:34,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:41:34,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637916123] [2023-11-28 23:41:34,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:34,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:41:34,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:34,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:41:34,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:41:34,215 INFO L87 Difference]: Start difference. First operand 7495 states and 11095 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:34,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:34,734 INFO L93 Difference]: Finished difference Result 21683 states and 31677 transitions. [2023-11-28 23:41:34,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:41:34,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 73 [2023-11-28 23:41:34,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:34,764 INFO L225 Difference]: With dead ends: 21683 [2023-11-28 23:41:34,765 INFO L226 Difference]: Without dead ends: 18881 [2023-11-28 23:41:34,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:41:34,771 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6338 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:34,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6338 Valid, 3574 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:41:34,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18881 states. [2023-11-28 23:41:35,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18881 to 11287. [2023-11-28 23:41:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11287 states, 11285 states have (on average 1.4638015064244572) internal successors, (16519), 11286 states have internal predecessors, (16519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:35,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11287 states to 11287 states and 16519 transitions. [2023-11-28 23:41:35,164 INFO L78 Accepts]: Start accepts. Automaton has 11287 states and 16519 transitions. Word has length 73 [2023-11-28 23:41:35,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:35,164 INFO L495 AbstractCegarLoop]: Abstraction has 11287 states and 16519 transitions. [2023-11-28 23:41:35,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:35,165 INFO L276 IsEmpty]: Start isEmpty. Operand 11287 states and 16519 transitions. [2023-11-28 23:41:35,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-28 23:41:35,169 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:35,169 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] [2023-11-28 23:41:35,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-28 23:41:35,169 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:35,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:35,170 INFO L85 PathProgramCache]: Analyzing trace with hash -568417134, now seen corresponding path program 1 times [2023-11-28 23:41:35,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:35,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951952482] [2023-11-28 23:41:35,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:35,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:35,364 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-28 23:41:35,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:35,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951952482] [2023-11-28 23:41:35,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951952482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:35,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:35,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:41:35,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107489444] [2023-11-28 23:41:35,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:35,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:41:35,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:35,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:41:35,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:41:35,367 INFO L87 Difference]: Start difference. First operand 11287 states and 16519 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:35,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:35,963 INFO L93 Difference]: Finished difference Result 24483 states and 35693 transitions. [2023-11-28 23:41:35,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:41:35,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-11-28 23:41:35,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:36,011 INFO L225 Difference]: With dead ends: 24483 [2023-11-28 23:41:36,011 INFO L226 Difference]: Without dead ends: 21681 [2023-11-28 23:41:36,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:41:36,022 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6383 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6383 SdHoareTripleChecker+Valid, 3539 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:36,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6383 Valid, 3539 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:41:36,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21681 states. [2023-11-28 23:41:36,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21681 to 14087. [2023-11-28 23:41:36,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14087 states, 14085 states have (on average 1.4579339723109692) internal successors, (20535), 14086 states have internal predecessors, (20535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:36,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14087 states to 14087 states and 20535 transitions. [2023-11-28 23:41:36,556 INFO L78 Accepts]: Start accepts. Automaton has 14087 states and 20535 transitions. Word has length 73 [2023-11-28 23:41:36,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:36,556 INFO L495 AbstractCegarLoop]: Abstraction has 14087 states and 20535 transitions. [2023-11-28 23:41:36,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:36,556 INFO L276 IsEmpty]: Start isEmpty. Operand 14087 states and 20535 transitions. [2023-11-28 23:41:36,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-28 23:41:36,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:36,559 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] [2023-11-28 23:41:36,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-28 23:41:36,559 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:36,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:36,560 INFO L85 PathProgramCache]: Analyzing trace with hash 320316306, now seen corresponding path program 1 times [2023-11-28 23:41:36,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:36,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120871696] [2023-11-28 23:41:36,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:36,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-28 23:41:36,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:36,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120871696] [2023-11-28 23:41:36,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120871696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:36,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:36,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:41:36,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180959898] [2023-11-28 23:41:36,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:36,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:41:36,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:36,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:41:36,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:41:36,711 INFO L87 Difference]: Start difference. First operand 14087 states and 20535 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:37,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:37,319 INFO L93 Difference]: Finished difference Result 27283 states and 39709 transitions. [2023-11-28 23:41:37,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:41:37,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-11-28 23:41:37,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:37,341 INFO L225 Difference]: With dead ends: 27283 [2023-11-28 23:41:37,341 INFO L226 Difference]: Without dead ends: 24481 [2023-11-28 23:41:37,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:41:37,349 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6339 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6339 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:37,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6339 Valid, 3590 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:41:37,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24481 states. [2023-11-28 23:41:37,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24481 to 16887. [2023-11-28 23:41:37,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16887 states, 16885 states have (on average 1.4540124370743264) internal successors, (24551), 16886 states have internal predecessors, (24551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:37,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16887 states to 16887 states and 24551 transitions. [2023-11-28 23:41:37,893 INFO L78 Accepts]: Start accepts. Automaton has 16887 states and 24551 transitions. Word has length 73 [2023-11-28 23:41:37,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:37,894 INFO L495 AbstractCegarLoop]: Abstraction has 16887 states and 24551 transitions. [2023-11-28 23:41:37,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:37,894 INFO L276 IsEmpty]: Start isEmpty. Operand 16887 states and 24551 transitions. [2023-11-28 23:41:37,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-28 23:41:37,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:37,896 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] [2023-11-28 23:41:37,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-28 23:41:37,896 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:37,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:37,896 INFO L85 PathProgramCache]: Analyzing trace with hash 17294994, now seen corresponding path program 1 times [2023-11-28 23:41:37,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:37,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905847410] [2023-11-28 23:41:37,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:37,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-28 23:41:38,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:38,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905847410] [2023-11-28 23:41:38,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905847410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:38,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:38,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:41:38,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383653868] [2023-11-28 23:41:38,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:38,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:41:38,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:38,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:41:38,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:41:38,046 INFO L87 Difference]: Start difference. First operand 16887 states and 24551 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:38,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:38,913 INFO L93 Difference]: Finished difference Result 30083 states and 43725 transitions. [2023-11-28 23:41:38,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:41:38,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 73 [2023-11-28 23:41:38,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:38,936 INFO L225 Difference]: With dead ends: 30083 [2023-11-28 23:41:38,936 INFO L226 Difference]: Without dead ends: 27281 [2023-11-28 23:41:38,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:41:38,944 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 6293 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6293 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:38,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6293 Valid, 3665 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:41:38,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27281 states. [2023-11-28 23:41:39,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27281 to 19687. [2023-11-28 23:41:39,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19687 states, 19685 states have (on average 1.4512065024130048) internal successors, (28567), 19686 states have internal predecessors, (28567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:39,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19687 states to 19687 states and 28567 transitions. [2023-11-28 23:41:39,554 INFO L78 Accepts]: Start accepts. Automaton has 19687 states and 28567 transitions. Word has length 73 [2023-11-28 23:41:39,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:39,555 INFO L495 AbstractCegarLoop]: Abstraction has 19687 states and 28567 transitions. [2023-11-28 23:41:39,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:39,555 INFO L276 IsEmpty]: Start isEmpty. Operand 19687 states and 28567 transitions. [2023-11-28 23:41:39,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-28 23:41:39,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:39,559 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] [2023-11-28 23:41:39,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-28 23:41:39,559 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:39,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:39,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1436271534, now seen corresponding path program 1 times [2023-11-28 23:41:39,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:39,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688507539] [2023-11-28 23:41:39,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:39,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:39,656 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:39,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:39,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688507539] [2023-11-28 23:41:39,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688507539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:39,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:39,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:41:39,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196067139] [2023-11-28 23:41:39,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:39,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:41:39,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:39,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:41:39,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:41:39,658 INFO L87 Difference]: Start difference. First operand 19687 states and 28567 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:40,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:40,159 INFO L93 Difference]: Finished difference Result 37083 states and 53545 transitions. [2023-11-28 23:41:40,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:41:40,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-11-28 23:41:40,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:40,175 INFO L225 Difference]: With dead ends: 37083 [2023-11-28 23:41:40,175 INFO L226 Difference]: Without dead ends: 19689 [2023-11-28 23:41:40,184 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 [2023-11-28 23:41:40,185 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 45 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3097 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 [2023-11-28 23:41:40,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3097 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:41:40,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19689 states. [2023-11-28 23:41:40,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19689 to 19687. [2023-11-28 23:41:40,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19687 states, 19685 states have (on average 1.4361696723393447) internal successors, (28271), 19686 states have internal predecessors, (28271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:40,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19687 states to 19687 states and 28271 transitions. [2023-11-28 23:41:40,704 INFO L78 Accepts]: Start accepts. Automaton has 19687 states and 28271 transitions. Word has length 74 [2023-11-28 23:41:40,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:40,704 INFO L495 AbstractCegarLoop]: Abstraction has 19687 states and 28271 transitions. [2023-11-28 23:41:40,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:40,705 INFO L276 IsEmpty]: Start isEmpty. Operand 19687 states and 28271 transitions. [2023-11-28 23:41:40,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-28 23:41:40,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:40,707 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] [2023-11-28 23:41:40,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-28 23:41:40,707 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:40,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:40,707 INFO L85 PathProgramCache]: Analyzing trace with hash -702984806, now seen corresponding path program 1 times [2023-11-28 23:41:40,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:40,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788636015] [2023-11-28 23:41:40,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:40,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:40,774 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:40,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:40,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788636015] [2023-11-28 23:41:40,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788636015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:40,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:40,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:41:40,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942445378] [2023-11-28 23:41:40,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:40,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:41:40,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:40,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:41:40,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:41:40,777 INFO L87 Difference]: Start difference. First operand 19687 states and 28271 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:40,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:40,993 INFO L93 Difference]: Finished difference Result 26157 states and 37548 transitions. [2023-11-28 23:41:40,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:41:40,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-11-28 23:41:40,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:41,001 INFO L225 Difference]: With dead ends: 26157 [2023-11-28 23:41:41,001 INFO L226 Difference]: Without dead ends: 8763 [2023-11-28 23:41:41,011 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 [2023-11-28 23:41:41,012 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 39 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3094 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 [2023-11-28 23:41:41,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3094 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:41:41,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8763 states. [2023-11-28 23:41:41,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8763 to 8756. [2023-11-28 23:41:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8756 states, 8754 states have (on average 1.4571624400274161) internal successors, (12756), 8755 states have internal predecessors, (12756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8756 states to 8756 states and 12756 transitions. [2023-11-28 23:41:41,201 INFO L78 Accepts]: Start accepts. Automaton has 8756 states and 12756 transitions. Word has length 75 [2023-11-28 23:41:41,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:41,201 INFO L495 AbstractCegarLoop]: Abstraction has 8756 states and 12756 transitions. [2023-11-28 23:41:41,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:41,202 INFO L276 IsEmpty]: Start isEmpty. Operand 8756 states and 12756 transitions. [2023-11-28 23:41:41,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-28 23:41:41,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:41,203 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] [2023-11-28 23:41:41,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-28 23:41:41,203 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:41,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:41,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1790502652, now seen corresponding path program 1 times [2023-11-28 23:41:41,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:41,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483549378] [2023-11-28 23:41:41,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:41,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:41,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:41,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483549378] [2023-11-28 23:41:41,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483549378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:41,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:41,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:41:41,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430514008] [2023-11-28 23:41:41,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:41,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:41:41,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:41,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:41:41,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:41:41,299 INFO L87 Difference]: Start difference. First operand 8756 states and 12756 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:41,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:41,454 INFO L93 Difference]: Finished difference Result 11984 states and 17334 transitions. [2023-11-28 23:41:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:41:41,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-28 23:41:41,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:41,461 INFO L225 Difference]: With dead ends: 11984 [2023-11-28 23:41:41,461 INFO L226 Difference]: Without dead ends: 5534 [2023-11-28 23:41:41,467 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 [2023-11-28 23:41:41,467 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 41 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3073 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 [2023-11-28 23:41:41,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3073 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:41:41,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5534 states. [2023-11-28 23:41:41,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5534 to 5532. [2023-11-28 23:41:41,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5532 states, 5530 states have (on average 1.4698010849909584) internal successors, (8128), 5531 states have internal predecessors, (8128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:41,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5532 states to 5532 states and 8128 transitions. [2023-11-28 23:41:41,585 INFO L78 Accepts]: Start accepts. Automaton has 5532 states and 8128 transitions. Word has length 76 [2023-11-28 23:41:41,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:41,585 INFO L495 AbstractCegarLoop]: Abstraction has 5532 states and 8128 transitions. [2023-11-28 23:41:41,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:41,585 INFO L276 IsEmpty]: Start isEmpty. Operand 5532 states and 8128 transitions. [2023-11-28 23:41:41,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-28 23:41:41,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:41,587 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] [2023-11-28 23:41:41,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-28 23:41:41,587 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:41,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:41,588 INFO L85 PathProgramCache]: Analyzing trace with hash -626519094, now seen corresponding path program 1 times [2023-11-28 23:41:41,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:41,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297675426] [2023-11-28 23:41:41,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:41,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:41,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:41,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297675426] [2023-11-28 23:41:41,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297675426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:41,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:41,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:41:41,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539433987] [2023-11-28 23:41:41,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:41,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:41:41,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:41,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:41:41,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:41:41,679 INFO L87 Difference]: Start difference. First operand 5532 states and 8128 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:41,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:41,770 INFO L93 Difference]: Finished difference Result 7148 states and 10392 transitions. [2023-11-28 23:41:41,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:41:41,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-28 23:41:41,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:41,774 INFO L225 Difference]: With dead ends: 7148 [2023-11-28 23:41:41,775 INFO L226 Difference]: Without dead ends: 3922 [2023-11-28 23:41:41,778 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 [2023-11-28 23:41:41,779 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 38 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3058 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 [2023-11-28 23:41:41,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3058 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:41:41,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2023-11-28 23:41:41,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3920. [2023-11-28 23:41:41,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3920 states, 3918 states have (on average 1.49055640632976) internal successors, (5840), 3919 states have internal predecessors, (5840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:41,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 5840 transitions. [2023-11-28 23:41:41,853 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 5840 transitions. Word has length 78 [2023-11-28 23:41:41,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:41,854 INFO L495 AbstractCegarLoop]: Abstraction has 3920 states and 5840 transitions. [2023-11-28 23:41:41,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:41,854 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 5840 transitions. [2023-11-28 23:41:41,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-28 23:41:41,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:41,855 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:41:41,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-28 23:41:41,856 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:41,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:41,856 INFO L85 PathProgramCache]: Analyzing trace with hash 439495192, now seen corresponding path program 1 times [2023-11-28 23:41:41,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:41,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763748530] [2023-11-28 23:41:41,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:41,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:41,977 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:41,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:41,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763748530] [2023-11-28 23:41:41,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763748530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:41,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:41,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:41:41,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019096895] [2023-11-28 23:41:41,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:41,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:41:41,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:41,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:41:41,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:41:41,980 INFO L87 Difference]: Start difference. First operand 3920 states and 5840 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:42,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:42,066 INFO L93 Difference]: Finished difference Result 4730 states and 6960 transitions. [2023-11-28 23:41:42,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:41:42,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-28 23:41:42,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:42,070 INFO L225 Difference]: With dead ends: 4730 [2023-11-28 23:41:42,070 INFO L226 Difference]: Without dead ends: 3116 [2023-11-28 23:41:42,072 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 [2023-11-28 23:41:42,073 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 35 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3043 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 [2023-11-28 23:41:42,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3043 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:41:42,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2023-11-28 23:41:42,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 3114. [2023-11-28 23:41:42,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3114 states, 3112 states have (on average 1.5131748071979434) internal successors, (4709), 3113 states have internal predecessors, (4709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3114 states to 3114 states and 4709 transitions. [2023-11-28 23:41:42,149 INFO L78 Accepts]: Start accepts. Automaton has 3114 states and 4709 transitions. Word has length 80 [2023-11-28 23:41:42,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:42,149 INFO L495 AbstractCegarLoop]: Abstraction has 3114 states and 4709 transitions. [2023-11-28 23:41:42,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:42,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3114 states and 4709 transitions. [2023-11-28 23:41:42,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-28 23:41:42,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:42,151 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:41:42,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-28 23:41:42,151 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:42,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:42,152 INFO L85 PathProgramCache]: Analyzing trace with hash 397937126, now seen corresponding path program 1 times [2023-11-28 23:41:42,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:42,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325286461] [2023-11-28 23:41:42,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:42,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:43,219 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:43,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:43,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325286461] [2023-11-28 23:41:43,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325286461] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:41:43,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813341345] [2023-11-28 23:41:43,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:43,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:43,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:41:43,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:41:43,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:41:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:43,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-28 23:41:43,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:41:43,559 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:41:43,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:41:43,770 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 23:41:43,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813341345] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:41:43,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:41:43,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-11-28 23:41:43,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427633231] [2023-11-28 23:41:43,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:41:43,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-28 23:41:43,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:43,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-28 23:41:43,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-28 23:41:43,773 INFO L87 Difference]: Start difference. First operand 3114 states and 4709 transitions. Second operand has 18 states, 18 states have (on average 12.88888888888889) internal successors, (232), 18 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:46,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:46,356 INFO L93 Difference]: Finished difference Result 9615 states and 13431 transitions. [2023-11-28 23:41:46,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-28 23:41:46,356 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.88888888888889) internal successors, (232), 18 states have internal predecessors, (232), 0 states have call successors, (0), 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 82 [2023-11-28 23:41:46,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:46,363 INFO L225 Difference]: With dead ends: 9615 [2023-11-28 23:41:46,364 INFO L226 Difference]: Without dead ends: 8807 [2023-11-28 23:41:46,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=747, Invalid=3285, Unknown=0, NotChecked=0, Total=4032 [2023-11-28 23:41:46,367 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 12145 mSDsluCounter, 6318 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12145 SdHoareTripleChecker+Valid, 7828 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:46,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12145 Valid, 7828 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-28 23:41:46,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8807 states. [2023-11-28 23:41:46,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8807 to 8407. [2023-11-28 23:41:46,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8407 states, 8405 states have (on average 1.3817965496728137) internal successors, (11614), 8406 states have internal predecessors, (11614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:46,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8407 states to 8407 states and 11614 transitions. [2023-11-28 23:41:46,576 INFO L78 Accepts]: Start accepts. Automaton has 8407 states and 11614 transitions. Word has length 82 [2023-11-28 23:41:46,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:46,576 INFO L495 AbstractCegarLoop]: Abstraction has 8407 states and 11614 transitions. [2023-11-28 23:41:46,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.88888888888889) internal successors, (232), 18 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:46,576 INFO L276 IsEmpty]: Start isEmpty. Operand 8407 states and 11614 transitions. [2023-11-28 23:41:46,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-28 23:41:46,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:46,577 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-28 23:41:46,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:41:46,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:46,778 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:46,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:46,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1527392688, now seen corresponding path program 1 times [2023-11-28 23:41:46,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:46,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290880595] [2023-11-28 23:41:46,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:46,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:47,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:47,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290880595] [2023-11-28 23:41:47,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290880595] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:41:47,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788987549] [2023-11-28 23:41:47,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:47,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:47,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:41:47,209 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:41:47,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:41:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:47,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-28 23:41:47,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:41:47,743 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:47,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:41:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:49,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788987549] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:41:49,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:41:49,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-11-28 23:41:49,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226926117] [2023-11-28 23:41:49,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:41:49,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-28 23:41:49,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:49,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-28 23:41:49,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2023-11-28 23:41:49,140 INFO L87 Difference]: Start difference. First operand 8407 states and 11614 transitions. Second operand has 27 states, 27 states have (on average 8.0) internal successors, (216), 27 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:50,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:50,228 INFO L93 Difference]: Finished difference Result 19229 states and 25626 transitions. [2023-11-28 23:41:50,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-28 23:41:50,229 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.0) internal successors, (216), 27 states have internal predecessors, (216), 0 states have call successors, (0), 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 83 [2023-11-28 23:41:50,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:50,238 INFO L225 Difference]: With dead ends: 19229 [2023-11-28 23:41:50,238 INFO L226 Difference]: Without dead ends: 13386 [2023-11-28 23:41:50,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=329, Invalid=1153, Unknown=0, NotChecked=0, Total=1482 [2023-11-28 23:41:50,243 INFO L413 NwaCegarLoop]: 1508 mSDtfsCounter, 16425 mSDsluCounter, 9297 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16425 SdHoareTripleChecker+Valid, 10805 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:50,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16425 Valid, 10805 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 23:41:50,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13386 states. [2023-11-28 23:41:50,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13386 to 12934. [2023-11-28 23:41:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12934 states, 12932 states have (on average 1.3475873801422826) internal successors, (17427), 12933 states have internal predecessors, (17427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12934 states to 12934 states and 17427 transitions. [2023-11-28 23:41:50,708 INFO L78 Accepts]: Start accepts. Automaton has 12934 states and 17427 transitions. Word has length 83 [2023-11-28 23:41:50,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:50,708 INFO L495 AbstractCegarLoop]: Abstraction has 12934 states and 17427 transitions. [2023-11-28 23:41:50,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.0) internal successors, (216), 27 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:50,708 INFO L276 IsEmpty]: Start isEmpty. Operand 12934 states and 17427 transitions. [2023-11-28 23:41:50,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-28 23:41:50,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:50,709 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-28 23:41:50,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:41:50,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-28 23:41:50,910 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:50,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:50,910 INFO L85 PathProgramCache]: Analyzing trace with hash 577648048, now seen corresponding path program 1 times [2023-11-28 23:41:50,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:50,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197373522] [2023-11-28 23:41:50,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:50,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:51,386 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:51,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:51,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197373522] [2023-11-28 23:41:51,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197373522] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:41:51,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451516233] [2023-11-28 23:41:51,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:51,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:51,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:41:51,388 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:41:51,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:41:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:51,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-28 23:41:51,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:41:52,023 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:52,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:41:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:53,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451516233] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:41:53,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:41:53,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-11-28 23:41:53,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701400367] [2023-11-28 23:41:53,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:41:53,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-28 23:41:53,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:53,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-28 23:41:53,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2023-11-28 23:41:53,023 INFO L87 Difference]: Start difference. First operand 12934 states and 17427 transitions. Second operand has 24 states, 24 states have (on average 9.625) internal successors, (231), 23 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:56,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:56,017 INFO L93 Difference]: Finished difference Result 35744 states and 46930 transitions. [2023-11-28 23:41:56,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-28 23:41:56,018 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 9.625) internal successors, (231), 23 states have internal predecessors, (231), 0 states have call successors, (0), 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 83 [2023-11-28 23:41:56,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:56,072 INFO L225 Difference]: With dead ends: 35744 [2023-11-28 23:41:56,072 INFO L226 Difference]: Without dead ends: 25890 [2023-11-28 23:41:56,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=687, Invalid=2619, Unknown=0, NotChecked=0, Total=3306 [2023-11-28 23:41:56,078 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 20577 mSDsluCounter, 5023 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20577 SdHoareTripleChecker+Valid, 6541 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:56,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20577 Valid, 6541 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 23:41:56,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25890 states. [2023-11-28 23:41:56,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25890 to 22418. [2023-11-28 23:41:56,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22418 states, 22416 states have (on average 1.2933618843683083) internal successors, (28992), 22417 states have internal predecessors, (28992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:56,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22418 states to 22418 states and 28992 transitions. [2023-11-28 23:41:56,853 INFO L78 Accepts]: Start accepts. Automaton has 22418 states and 28992 transitions. Word has length 83 [2023-11-28 23:41:56,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:56,853 INFO L495 AbstractCegarLoop]: Abstraction has 22418 states and 28992 transitions. [2023-11-28 23:41:56,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.625) internal successors, (231), 23 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:41:56,853 INFO L276 IsEmpty]: Start isEmpty. Operand 22418 states and 28992 transitions. [2023-11-28 23:41:56,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-28 23:41:56,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:56,855 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:41:56,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:41:57,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:57,056 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:57,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:57,056 INFO L85 PathProgramCache]: Analyzing trace with hash 967990340, now seen corresponding path program 1 times [2023-11-28 23:41:57,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:57,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970731701] [2023-11-28 23:41:57,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:57,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:57,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:57,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970731701] [2023-11-28 23:41:57,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970731701] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:41:57,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749246267] [2023-11-28 23:41:57,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:57,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:57,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:41:57,543 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:41:57,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:41:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:57,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 23:41:57,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:41:58,098 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:58,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:41:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:41:58,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749246267] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:41:58,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:41:58,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-11-28 23:41:58,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959214465] [2023-11-28 23:41:58,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:41:58,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-28 23:41:58,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:58,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-28 23:41:58,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2023-11-28 23:41:58,766 INFO L87 Difference]: Start difference. First operand 22418 states and 28992 transitions. Second operand has 25 states, 25 states have (on average 8.6) internal successors, (215), 24 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:42:03,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:42:03,233 INFO L93 Difference]: Finished difference Result 109189 states and 138404 transitions. [2023-11-28 23:42:03,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-28 23:42:03,234 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.6) internal successors, (215), 24 states have internal predecessors, (215), 0 states have call successors, (0), 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 84 [2023-11-28 23:42:03,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:42:03,325 INFO L225 Difference]: With dead ends: 109189 [2023-11-28 23:42:03,326 INFO L226 Difference]: Without dead ends: 89484 [2023-11-28 23:42:03,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=553, Invalid=2417, Unknown=0, NotChecked=0, Total=2970 [2023-11-28 23:42:03,340 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 21302 mSDsluCounter, 7040 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21302 SdHoareTripleChecker+Valid, 8613 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:42:03,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21302 Valid, 8613 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-28 23:42:03,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89484 states. [2023-11-28 23:42:06,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89484 to 84456. [2023-11-28 23:42:06,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84456 states, 84454 states have (on average 1.2445354867738652) internal successors, (105106), 84455 states have internal predecessors, (105106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:42:06,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84456 states to 84456 states and 105106 transitions. [2023-11-28 23:42:06,932 INFO L78 Accepts]: Start accepts. Automaton has 84456 states and 105106 transitions. Word has length 84 [2023-11-28 23:42:06,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:42:06,933 INFO L495 AbstractCegarLoop]: Abstraction has 84456 states and 105106 transitions. [2023-11-28 23:42:06,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.6) internal successors, (215), 24 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:42:06,933 INFO L276 IsEmpty]: Start isEmpty. Operand 84456 states and 105106 transitions. [2023-11-28 23:42:06,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-28 23:42:06,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:42:06,935 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:42:06,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 23:42:07,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:42:07,136 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:42:07,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:42:07,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1688504568, now seen corresponding path program 1 times [2023-11-28 23:42:07,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:42:07,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104842533] [2023-11-28 23:42:07,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:42:07,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:42:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:42:08,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:42:08,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104842533] [2023-11-28 23:42:08,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104842533] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:42:08,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13183169] [2023-11-28 23:42:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:42:08,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:42:08,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:42:08,072 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:42:08,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:42:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:08,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-28 23:42:08,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:42:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:42:10,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:42:12,809 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:42:12,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13183169] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:42:12,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:42:12,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 15] total 42 [2023-11-28 23:42:12,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010027694] [2023-11-28 23:42:12,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:42:12,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-28 23:42:12,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:42:12,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-28 23:42:12,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2023-11-28 23:42:12,812 INFO L87 Difference]: Start difference. First operand 84456 states and 105106 transitions. Second operand has 42 states, 42 states have (on average 5.571428571428571) internal successors, (234), 42 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:42:56,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:42:56,725 INFO L93 Difference]: Finished difference Result 203767 states and 252756 transitions. [2023-11-28 23:42:56,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2023-11-28 23:42:56,725 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.571428571428571) internal successors, (234), 42 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-28 23:42:56,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:42:56,871 INFO L225 Difference]: With dead ends: 203767 [2023-11-28 23:42:56,871 INFO L226 Difference]: Without dead ends: 160150 [2023-11-28 23:42:56,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24222 ImplicationChecksByTransitivity, 35.8s TimeCoverageRelationStatistics Valid=8183, Invalid=53569, Unknown=0, NotChecked=0, Total=61752 [2023-11-28 23:42:56,913 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 19964 mSDsluCounter, 27215 mSDsCounter, 0 mSdLazyCounter, 4062 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19964 SdHoareTripleChecker+Valid, 28792 SdHoareTripleChecker+Invalid, 4220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 4062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:42:56,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19964 Valid, 28792 Invalid, 4220 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [158 Valid, 4062 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-28 23:42:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160150 states. [2023-11-28 23:43:01,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160150 to 89444. [2023-11-28 23:43:01,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89444 states, 89442 states have (on average 1.247042776324322) internal successors, (111538), 89443 states have internal predecessors, (111538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:43:01,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89444 states to 89444 states and 111538 transitions. [2023-11-28 23:43:01,603 INFO L78 Accepts]: Start accepts. Automaton has 89444 states and 111538 transitions. Word has length 86 [2023-11-28 23:43:01,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:01,603 INFO L495 AbstractCegarLoop]: Abstraction has 89444 states and 111538 transitions. [2023-11-28 23:43:01,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.571428571428571) internal successors, (234), 42 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:43:01,604 INFO L276 IsEmpty]: Start isEmpty. Operand 89444 states and 111538 transitions. [2023-11-28 23:43:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-28 23:43:01,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:01,605 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:43:01,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 23:43:01,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:01,806 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:01,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:01,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1087565028, now seen corresponding path program 1 times [2023-11-28 23:43:01,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:01,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660310319] [2023-11-28 23:43:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:01,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:02,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:02,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660310319] [2023-11-28 23:43:02,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660310319] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:43:02,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912312582] [2023-11-28 23:43:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:02,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:02,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:43:02,572 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:43:02,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:43:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:02,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-28 23:43:02,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:03,483 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:03,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:43:04,498 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:04,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912312582] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:43:04,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:43:04,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2023-11-28 23:43:04,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592621154] [2023-11-28 23:43:04,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:43:04,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-28 23:43:04,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:04,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-28 23:43:04,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2023-11-28 23:43:04,501 INFO L87 Difference]: Start difference. First operand 89444 states and 111538 transitions. Second operand has 32 states, 32 states have (on average 6.3125) internal successors, (202), 32 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:43:09,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:09,151 INFO L93 Difference]: Finished difference Result 110898 states and 138039 transitions. [2023-11-28 23:43:09,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-28 23:43:09,152 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.3125) internal successors, (202), 32 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-28 23:43:09,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:09,215 INFO L225 Difference]: With dead ends: 110898 [2023-11-28 23:43:09,215 INFO L226 Difference]: Without dead ends: 80984 [2023-11-28 23:43:09,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=544, Invalid=1906, Unknown=0, NotChecked=0, Total=2450 [2023-11-28 23:43:09,234 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 8466 mSDsluCounter, 17928 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8466 SdHoareTripleChecker+Valid, 19438 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:09,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8466 Valid, 19438 Invalid, 673 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 23:43:09,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80984 states. [2023-11-28 23:43:13,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80984 to 79486. [2023-11-28 23:43:13,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79486 states, 79484 states have (on average 1.2430677872276181) internal successors, (98804), 79485 states have internal predecessors, (98804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:43:13,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79486 states to 79486 states and 98804 transitions. [2023-11-28 23:43:13,368 INFO L78 Accepts]: Start accepts. Automaton has 79486 states and 98804 transitions. Word has length 86 [2023-11-28 23:43:13,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:13,369 INFO L495 AbstractCegarLoop]: Abstraction has 79486 states and 98804 transitions. [2023-11-28 23:43:13,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.3125) internal successors, (202), 32 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:43:13,369 INFO L276 IsEmpty]: Start isEmpty. Operand 79486 states and 98804 transitions. [2023-11-28 23:43:13,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-28 23:43:13,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:13,371 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:43:13,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 23:43:13,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:13,572 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:13,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:13,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1287109414, now seen corresponding path program 1 times [2023-11-28 23:43:13,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:13,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178257356] [2023-11-28 23:43:13,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:13,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:15,604 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:15,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:15,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178257356] [2023-11-28 23:43:15,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178257356] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:43:15,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507657455] [2023-11-28 23:43:15,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:15,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:15,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:43:15,606 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:43:15,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 23:43:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:15,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-28 23:43:15,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:16,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:43:18,550 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:18,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507657455] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:43:18,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:43:18,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 13] total 43 [2023-11-28 23:43:18,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981290760] [2023-11-28 23:43:18,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:43:18,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-28 23:43:18,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:18,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-28 23:43:18,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1652, Unknown=0, NotChecked=0, Total=1806 [2023-11-28 23:43:18,552 INFO L87 Difference]: Start difference. First operand 79486 states and 98804 transitions. Second operand has 43 states, 43 states have (on average 5.558139534883721) internal successors, (239), 43 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:43:39,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:39,271 INFO L93 Difference]: Finished difference Result 205296 states and 254266 transitions. [2023-11-28 23:43:39,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-11-28 23:43:39,271 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.558139534883721) internal successors, (239), 43 states have internal predecessors, (239), 0 states have call successors, (0), 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 [2023-11-28 23:43:39,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:39,443 INFO L225 Difference]: With dead ends: 205296 [2023-11-28 23:43:39,443 INFO L226 Difference]: Without dead ends: 175632 [2023-11-28 23:43:39,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5249 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=3496, Invalid=13274, Unknown=0, NotChecked=0, Total=16770 [2023-11-28 23:43:39,468 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 16369 mSDsluCounter, 20242 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16369 SdHoareTripleChecker+Valid, 21790 SdHoareTripleChecker+Invalid, 1975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:39,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16369 Valid, 21790 Invalid, 1975 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [176 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-28 23:43:39,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175632 states. [2023-11-28 23:43:44,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175632 to 69765. [2023-11-28 23:43:44,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69765 states, 69763 states have (on average 1.2440548714934851) internal successors, (86789), 69764 states have internal predecessors, (86789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:43:44,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69765 states to 69765 states and 86789 transitions. [2023-11-28 23:43:44,275 INFO L78 Accepts]: Start accepts. Automaton has 69765 states and 86789 transitions. Word has length 87 [2023-11-28 23:43:44,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:44,275 INFO L495 AbstractCegarLoop]: Abstraction has 69765 states and 86789 transitions. [2023-11-28 23:43:44,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.558139534883721) internal successors, (239), 43 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:43:44,276 INFO L276 IsEmpty]: Start isEmpty. Operand 69765 states and 86789 transitions. [2023-11-28 23:43:44,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-28 23:43:44,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:44,277 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:43:44,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 23:43:44,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:44,478 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:44,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:44,478 INFO L85 PathProgramCache]: Analyzing trace with hash 92502238, now seen corresponding path program 1 times [2023-11-28 23:43:44,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:44,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520444362] [2023-11-28 23:43:44,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:44,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:45,095 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:45,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:45,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520444362] [2023-11-28 23:43:45,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520444362] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:43:45,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494987992] [2023-11-28 23:43:45,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:45,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:45,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:43:45,097 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:43:45,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 23:43:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:45,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-28 23:43:45,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:46,292 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:46,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:43:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:47,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494987992] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:43:47,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:43:47,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2023-11-28 23:43:47,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857877059] [2023-11-28 23:43:47,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:43:47,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-28 23:43:47,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:47,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-28 23:43:47,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2023-11-28 23:43:47,005 INFO L87 Difference]: Start difference. First operand 69765 states and 86789 transitions. Second operand has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 31 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:43:52,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:52,688 INFO L93 Difference]: Finished difference Result 96552 states and 119419 transitions. [2023-11-28 23:43:52,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-28 23:43:52,688 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 31 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-11-28 23:43:52,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:52,748 INFO L225 Difference]: With dead ends: 96552 [2023-11-28 23:43:52,748 INFO L226 Difference]: Without dead ends: 68677 [2023-11-28 23:43:52,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=480, Invalid=1590, Unknown=0, NotChecked=0, Total=2070 [2023-11-28 23:43:52,764 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 5479 mSDsluCounter, 12389 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5479 SdHoareTripleChecker+Valid, 13911 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:52,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5479 Valid, 13911 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-28 23:43:52,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68677 states. [2023-11-28 23:43:55,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68677 to 47141. [2023-11-28 23:43:55,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47141 states, 47139 states have (on average 1.2454443242325888) internal successors, (58709), 47140 states have internal predecessors, (58709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:43:55,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47141 states to 47141 states and 58709 transitions. [2023-11-28 23:43:55,842 INFO L78 Accepts]: Start accepts. Automaton has 47141 states and 58709 transitions. Word has length 88 [2023-11-28 23:43:55,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:55,842 INFO L495 AbstractCegarLoop]: Abstraction has 47141 states and 58709 transitions. [2023-11-28 23:43:55,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 31 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:43:55,843 INFO L276 IsEmpty]: Start isEmpty. Operand 47141 states and 58709 transitions. [2023-11-28 23:43:55,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-28 23:43:55,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:55,849 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:43:55,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 23:43:56,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:56,050 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:56,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:56,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1948015120, now seen corresponding path program 1 times [2023-11-28 23:43:56,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:56,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778092278] [2023-11-28 23:43:56,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:56,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:57,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:57,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778092278] [2023-11-28 23:43:57,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778092278] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:43:57,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171356953] [2023-11-28 23:43:57,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:57,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:57,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:43:57,142 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:43:57,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 23:43:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:57,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-28 23:43:57,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 55 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:43:58,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:44:00,028 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 47 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:00,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171356953] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:44:00,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:44:00,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 33 [2023-11-28 23:44:00,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851977703] [2023-11-28 23:44:00,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:44:00,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-28 23:44:00,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:00,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-28 23:44:00,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2023-11-28 23:44:00,030 INFO L87 Difference]: Start difference. First operand 47141 states and 58709 transitions. Second operand has 34 states, 34 states have (on average 10.676470588235293) internal successors, (363), 33 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:44:13,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:13,183 INFO L93 Difference]: Finished difference Result 97304 states and 120720 transitions. [2023-11-28 23:44:13,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-11-28 23:44:13,184 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 10.676470588235293) internal successors, (363), 33 states have internal predecessors, (363), 0 states have call successors, (0), 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 [2023-11-28 23:44:13,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:13,242 INFO L225 Difference]: With dead ends: 97304 [2023-11-28 23:44:13,242 INFO L226 Difference]: Without dead ends: 64563 [2023-11-28 23:44:13,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5264 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=2787, Invalid=15845, Unknown=0, NotChecked=0, Total=18632 [2023-11-28 23:44:13,260 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 25348 mSDsluCounter, 13198 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25348 SdHoareTripleChecker+Valid, 14752 SdHoareTripleChecker+Invalid, 2799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:13,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25348 Valid, 14752 Invalid, 2799 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 2735 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-28 23:44:13,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64563 states. [2023-11-28 23:44:17,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64563 to 60893. [2023-11-28 23:44:17,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60893 states, 60891 states have (on average 1.2319554613982362) internal successors, (75015), 60892 states have internal predecessors, (75015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:44:17,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60893 states to 60893 states and 75015 transitions. [2023-11-28 23:44:17,424 INFO L78 Accepts]: Start accepts. Automaton has 60893 states and 75015 transitions. Word has length 134 [2023-11-28 23:44:17,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:17,424 INFO L495 AbstractCegarLoop]: Abstraction has 60893 states and 75015 transitions. [2023-11-28 23:44:17,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.676470588235293) internal successors, (363), 33 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:44:17,425 INFO L276 IsEmpty]: Start isEmpty. Operand 60893 states and 75015 transitions. [2023-11-28 23:44:17,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-28 23:44:17,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:17,432 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:17,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-28 23:44:17,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:17,632 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:17,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:17,633 INFO L85 PathProgramCache]: Analyzing trace with hash 350047216, now seen corresponding path program 1 times [2023-11-28 23:44:17,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:17,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047979686] [2023-11-28 23:44:17,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:17,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:18,528 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 38 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:18,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:18,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047979686] [2023-11-28 23:44:18,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047979686] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:18,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348719076] [2023-11-28 23:44:18,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:18,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:18,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:18,530 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:18,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 23:44:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:18,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-28 23:44:18,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:19,688 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 19 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:19,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:44:21,912 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 13 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:21,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348719076] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:44:21,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:44:21,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-11-28 23:44:21,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772615657] [2023-11-28 23:44:21,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:44:21,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-28 23:44:21,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:21,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-28 23:44:21,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2023-11-28 23:44:21,915 INFO L87 Difference]: Start difference. First operand 60893 states and 75015 transitions. Second operand has 36 states, 36 states have (on average 10.805555555555555) internal successors, (389), 35 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:44:43,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:44:43,845 INFO L93 Difference]: Finished difference Result 131800 states and 162953 transitions. [2023-11-28 23:44:43,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2023-11-28 23:44:43,846 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 10.805555555555555) internal successors, (389), 35 states have internal predecessors, (389), 0 states have call successors, (0), 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 [2023-11-28 23:44:43,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:44:43,930 INFO L225 Difference]: With dead ends: 131800 [2023-11-28 23:44:43,930 INFO L226 Difference]: Without dead ends: 91110 [2023-11-28 23:44:43,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9349 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=4480, Invalid=24590, Unknown=0, NotChecked=0, Total=29070 [2023-11-28 23:44:43,956 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 24587 mSDsluCounter, 19184 mSDsCounter, 0 mSdLazyCounter, 2818 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24587 SdHoareTripleChecker+Valid, 20723 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:44:43,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24587 Valid, 20723 Invalid, 2921 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [103 Valid, 2818 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-28 23:44:44,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91110 states. [2023-11-28 23:44:47,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91110 to 39831. [2023-11-28 23:44:47,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39831 states, 39829 states have (on average 1.2225514072660624) internal successors, (48693), 39830 states have internal predecessors, (48693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:44:47,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39831 states to 39831 states and 48693 transitions. [2023-11-28 23:44:47,776 INFO L78 Accepts]: Start accepts. Automaton has 39831 states and 48693 transitions. Word has length 134 [2023-11-28 23:44:47,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:44:47,776 INFO L495 AbstractCegarLoop]: Abstraction has 39831 states and 48693 transitions. [2023-11-28 23:44:47,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 10.805555555555555) internal successors, (389), 35 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:44:47,776 INFO L276 IsEmpty]: Start isEmpty. Operand 39831 states and 48693 transitions. [2023-11-28 23:44:47,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-28 23:44:47,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:44:47,781 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:44:47,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-28 23:44:47,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:47,982 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:44:47,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:44:47,982 INFO L85 PathProgramCache]: Analyzing trace with hash 2122195456, now seen corresponding path program 1 times [2023-11-28 23:44:47,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:44:47,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313425298] [2023-11-28 23:44:47,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:47,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:44:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:49,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:44:49,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313425298] [2023-11-28 23:44:49,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313425298] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:44:49,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587517161] [2023-11-28 23:44:49,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:44:49,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:44:49,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:44:49,596 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:44:49,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 23:44:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:44:49,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-28 23:44:49,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:44:50,846 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 33 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:50,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:44:52,796 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 31 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:44:52,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587517161] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:44:52,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:44:52,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 11] total 39 [2023-11-28 23:44:52,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003921340] [2023-11-28 23:44:52,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:44:52,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-28 23:44:52,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:44:52,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-28 23:44:52,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2023-11-28 23:44:52,798 INFO L87 Difference]: Start difference. First operand 39831 states and 48693 transitions. Second operand has 40 states, 40 states have (on average 9.575) internal successors, (383), 39 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:45:08,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:45:08,490 INFO L93 Difference]: Finished difference Result 71573 states and 87035 transitions. [2023-11-28 23:45:08,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-11-28 23:45:08,491 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 9.575) internal successors, (383), 39 states have internal predecessors, (383), 0 states have call successors, (0), 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 136 [2023-11-28 23:45:08,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:45:08,535 INFO L225 Difference]: With dead ends: 71573 [2023-11-28 23:45:08,536 INFO L226 Difference]: Without dead ends: 52990 [2023-11-28 23:45:08,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7155 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=3175, Invalid=20387, Unknown=0, NotChecked=0, Total=23562 [2023-11-28 23:45:08,549 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 21857 mSDsluCounter, 21872 mSDsCounter, 0 mSdLazyCounter, 2556 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21857 SdHoareTripleChecker+Valid, 23428 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 2556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:45:08,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21857 Valid, 23428 Invalid, 2759 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [203 Valid, 2556 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-28 23:45:08,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52990 states. [2023-11-28 23:45:13,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52990 to 47834. [2023-11-28 23:45:13,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47834 states, 47832 states have (on average 1.2117201873222947) internal successors, (57959), 47833 states have internal predecessors, (57959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:45:13,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47834 states to 47834 states and 57959 transitions. [2023-11-28 23:45:13,187 INFO L78 Accepts]: Start accepts. Automaton has 47834 states and 57959 transitions. Word has length 136 [2023-11-28 23:45:13,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:45:13,187 INFO L495 AbstractCegarLoop]: Abstraction has 47834 states and 57959 transitions. [2023-11-28 23:45:13,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 9.575) internal successors, (383), 39 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:45:13,187 INFO L276 IsEmpty]: Start isEmpty. Operand 47834 states and 57959 transitions. [2023-11-28 23:45:13,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-28 23:45:13,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:45:13,193 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:45:13,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-28 23:45:13,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-28 23:45:13,394 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:45:13,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:45:13,394 INFO L85 PathProgramCache]: Analyzing trace with hash 650839388, now seen corresponding path program 1 times [2023-11-28 23:45:13,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:45:13,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530088975] [2023-11-28 23:45:13,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:13,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:45:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 13 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:45:16,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:45:16,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530088975] [2023-11-28 23:45:16,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530088975] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:45:16,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182808062] [2023-11-28 23:45:16,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:45:16,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:45:16,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:45:16,306 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:45:16,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6682f76-f787-45df-9c02-7a3473f0db40/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 23:45:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:45:16,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 82 conjunts are in the unsatisfiable core [2023-11-28 23:45:16,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:45:32,351 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:45:32,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:45:53,186 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 22 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:45:53,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182808062] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:45:53,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:45:53,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 39, 37] total 103 [2023-11-28 23:45:53,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102883] [2023-11-28 23:45:53,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:45:53,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2023-11-28 23:45:53,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:45:53,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2023-11-28 23:45:53,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=884, Invalid=9622, Unknown=0, NotChecked=0, Total=10506 [2023-11-28 23:45:53,189 INFO L87 Difference]: Start difference. First operand 47834 states and 57959 transitions. Second operand has 103 states, 103 states have (on average 3.8155339805825244) internal successors, (393), 103 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:46:18,674 WARN L293 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 374 DAG size of output: 218 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 23:46:30,251 WARN L293 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 390 DAG size of output: 221 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 23:46:37,527 WARN L293 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 405 DAG size of output: 219 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)