./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/toy.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/toy.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI --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 4a8eabec1830ab654b41f6937ec2f9359cd3dd371ede66eafc352bac48edda3b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:53:52,513 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:53:52,652 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:53:52,658 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:53:52,659 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:53:52,704 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:53:52,706 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:53:52,707 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:53:52,708 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:53:52,713 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:53:52,714 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:53:52,715 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:53:52,716 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:53:52,717 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:53:52,718 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:53:52,718 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:53:52,719 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:53:52,719 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:53:52,720 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:53:52,720 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:53:52,721 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:53:52,721 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:53:52,722 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:53:52,722 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:53:52,722 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:53:52,723 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:53:52,723 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:53:52,724 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:53:52,724 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:53:52,725 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:53:52,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:53:52,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:53:52,727 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:53:52,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:53:52,727 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:53:52,728 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:53:52,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:53:52,728 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:53:52,728 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:53:52,729 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:53:52,729 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:53:52,729 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:53:52,729 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_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a8eabec1830ab654b41f6937ec2f9359cd3dd371ede66eafc352bac48edda3b [2023-11-24 21:53:53,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:53:53,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:53:53,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:53:53,105 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:53:53,105 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:53:53,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/systemc/toy.cil.c [2023-11-24 21:53:56,197 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:53:56,483 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:53:56,483 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/sv-benchmarks/c/systemc/toy.cil.c [2023-11-24 21:53:56,500 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI/data/b54b5536c/66d35f6aa5744feb832cacb58811b188/FLAGb0e697e7d [2023-11-24 21:53:56,519 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI/data/b54b5536c/66d35f6aa5744feb832cacb58811b188 [2023-11-24 21:53:56,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:53:56,526 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:53:56,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:56,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:53:56,536 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:53:56,537 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:56" (1/1) ... [2023-11-24 21:53:56,538 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4334447d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:56, skipping insertion in model container [2023-11-24 21:53:56,538 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:53:56" (1/1) ... [2023-11-24 21:53:56,604 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:53:56,786 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_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/sv-benchmarks/c/systemc/toy.cil.c[697,710] [2023-11-24 21:53:56,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:56,877 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:53:56,890 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_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/sv-benchmarks/c/systemc/toy.cil.c[697,710] [2023-11-24 21:53:56,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:53:56,966 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:53:56,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:56 WrapperNode [2023-11-24 21:53:56,967 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:53:56,968 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:53:56,968 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:53:56,968 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:53:56,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:56" (1/1) ... [2023-11-24 21:53:56,997 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:56" (1/1) ... [2023-11-24 21:53:57,046 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 366 [2023-11-24 21:53:57,051 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:53:57,052 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:53:57,052 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:53:57,052 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:53:57,064 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:56" (1/1) ... [2023-11-24 21:53:57,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:56" (1/1) ... [2023-11-24 21:53:57,067 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:56" (1/1) ... [2023-11-24 21:53:57,082 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]. [2023-11-24 21:53:57,083 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:56" (1/1) ... [2023-11-24 21:53:57,083 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:56" (1/1) ... [2023-11-24 21:53:57,106 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:56" (1/1) ... [2023-11-24 21:53:57,122 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:56" (1/1) ... [2023-11-24 21:53:57,124 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:56" (1/1) ... [2023-11-24 21:53:57,126 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:56" (1/1) ... [2023-11-24 21:53:57,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:53:57,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:53:57,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:53:57,163 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:53:57,174 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:56" (1/1) ... [2023-11-24 21:53:57,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:53:57,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:53:57,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:53:57,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:53:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:53:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:53:57,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:53:57,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:53:57,423 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:53:57,427 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:53:57,954 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:53:57,996 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:53:57,996 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-24 21:53:57,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:53:57 BoogieIcfgContainer [2023-11-24 21:53:57,997 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:53:57,999 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:53:58,000 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:53:58,003 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:53:58,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:53:56" (1/3) ... [2023-11-24 21:53:58,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18611fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:53:58, skipping insertion in model container [2023-11-24 21:53:58,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:53:56" (2/3) ... [2023-11-24 21:53:58,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18611fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:53:58, skipping insertion in model container [2023-11-24 21:53:58,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:53:57" (3/3) ... [2023-11-24 21:53:58,007 INFO L112 eAbstractionObserver]: Analyzing ICFG toy.cil.c [2023-11-24 21:53:58,026 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:53:58,027 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:53:58,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:53:58,089 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;@16c47638, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:53:58,089 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 21:53:58,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 118 states have (on average 1.923728813559322) internal successors, (227), 119 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:58,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 21:53:58,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:58,107 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] [2023-11-24 21:53:58,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:53:58,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:58,113 INFO L85 PathProgramCache]: Analyzing trace with hash 429979365, now seen corresponding path program 1 times [2023-11-24 21:53:58,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:58,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429260998] [2023-11-24 21:53:58,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:58,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:58,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:58,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429260998] [2023-11-24 21:53:58,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429260998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:58,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:58,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:53:58,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481503057] [2023-11-24 21:53:58,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:58,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:58,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:58,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:58,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:58,475 INFO L87 Difference]: Start difference. First operand has 120 states, 118 states have (on average 1.923728813559322) internal successors, (227), 119 states have internal predecessors, (227), 0 states have call successors, (0), 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 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:58,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:58,568 INFO L93 Difference]: Finished difference Result 233 states and 442 transitions. [2023-11-24 21:53:58,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:53:58,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-24 21:53:58,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:58,581 INFO L225 Difference]: With dead ends: 233 [2023-11-24 21:53:58,582 INFO L226 Difference]: Without dead ends: 118 [2023-11-24 21:53:58,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:58,588 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 209 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:58,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 202 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:53:58,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-24 21:53:58,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-11-24 21:53:58,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.8034188034188035) internal successors, (211), 117 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:58,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 211 transitions. [2023-11-24 21:53:58,634 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 211 transitions. Word has length 33 [2023-11-24 21:53:58,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:58,635 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 211 transitions. [2023-11-24 21:53:58,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:58,635 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 211 transitions. [2023-11-24 21:53:58,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 21:53:58,637 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:58,637 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] [2023-11-24 21:53:58,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:53:58,638 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:53:58,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:58,639 INFO L85 PathProgramCache]: Analyzing trace with hash -956224029, now seen corresponding path program 1 times [2023-11-24 21:53:58,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:58,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320552891] [2023-11-24 21:53:58,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:58,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:58,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:58,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320552891] [2023-11-24 21:53:58,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320552891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:58,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:58,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:53:58,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745681934] [2023-11-24 21:53:58,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:58,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:53:58,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:58,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:53:58,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:53:58,868 INFO L87 Difference]: Start difference. First operand 118 states and 211 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:58,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:58,979 INFO L93 Difference]: Finished difference Result 318 states and 567 transitions. [2023-11-24 21:53:58,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:53:58,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-24 21:53:58,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:58,982 INFO L225 Difference]: With dead ends: 318 [2023-11-24 21:53:58,983 INFO L226 Difference]: Without dead ends: 202 [2023-11-24 21:53:58,984 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 [2023-11-24 21:53:58,986 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 550 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:58,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 337 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:53:58,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-11-24 21:53:59,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2023-11-24 21:53:59,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.7839195979899498) internal successors, (355), 199 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 355 transitions. [2023-11-24 21:53:59,026 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 355 transitions. Word has length 33 [2023-11-24 21:53:59,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:59,027 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 355 transitions. [2023-11-24 21:53:59,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,028 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 355 transitions. [2023-11-24 21:53:59,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 21:53:59,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:59,030 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] [2023-11-24 21:53:59,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:53:59,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:53:59,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:59,031 INFO L85 PathProgramCache]: Analyzing trace with hash 967004005, now seen corresponding path program 1 times [2023-11-24 21:53:59,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:59,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291199458] [2023-11-24 21:53:59,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:59,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:59,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:59,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:59,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291199458] [2023-11-24 21:53:59,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291199458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:59,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:59,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:53:59,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424333677] [2023-11-24 21:53:59,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:59,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:53:59,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:59,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:53:59,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:59,166 INFO L87 Difference]: Start difference. First operand 200 states and 355 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:59,226 INFO L93 Difference]: Finished difference Result 392 states and 698 transitions. [2023-11-24 21:53:59,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:53:59,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-24 21:53:59,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:59,230 INFO L225 Difference]: With dead ends: 392 [2023-11-24 21:53:59,230 INFO L226 Difference]: Without dead ends: 200 [2023-11-24 21:53:59,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:53:59,233 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 181 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:59,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 185 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:53:59,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-24 21:53:59,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2023-11-24 21:53:59,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.7236180904522613) internal successors, (343), 199 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 343 transitions. [2023-11-24 21:53:59,260 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 343 transitions. Word has length 33 [2023-11-24 21:53:59,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:59,260 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 343 transitions. [2023-11-24 21:53:59,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,261 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 343 transitions. [2023-11-24 21:53:59,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 21:53:59,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:59,263 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] [2023-11-24 21:53:59,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:53:59,264 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:53:59,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:59,265 INFO L85 PathProgramCache]: Analyzing trace with hash 17926369, now seen corresponding path program 1 times [2023-11-24 21:53:59,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:59,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816337304] [2023-11-24 21:53:59,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:59,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:59,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:59,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816337304] [2023-11-24 21:53:59,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816337304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:59,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:59,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:53:59,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76222195] [2023-11-24 21:53:59,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:59,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:53:59,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:59,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:53:59,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:53:59,338 INFO L87 Difference]: Start difference. First operand 200 states and 343 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:59,455 INFO L93 Difference]: Finished difference Result 543 states and 934 transitions. [2023-11-24 21:53:59,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:53:59,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-24 21:53:59,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:59,458 INFO L225 Difference]: With dead ends: 543 [2023-11-24 21:53:59,458 INFO L226 Difference]: Without dead ends: 352 [2023-11-24 21:53:59,459 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 [2023-11-24 21:53:59,461 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 353 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:59,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 409 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:53:59,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-11-24 21:53:59,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 200. [2023-11-24 21:53:59,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.7085427135678393) internal successors, (340), 199 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 340 transitions. [2023-11-24 21:53:59,484 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 340 transitions. Word has length 33 [2023-11-24 21:53:59,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:59,484 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 340 transitions. [2023-11-24 21:53:59,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,485 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 340 transitions. [2023-11-24 21:53:59,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 21:53:59,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:59,486 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] [2023-11-24 21:53:59,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:53:59,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:53:59,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:59,487 INFO L85 PathProgramCache]: Analyzing trace with hash 158474979, now seen corresponding path program 1 times [2023-11-24 21:53:59,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:59,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615238831] [2023-11-24 21:53:59,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:59,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:59,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:59,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:59,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615238831] [2023-11-24 21:53:59,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615238831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:59,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:59,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:53:59,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874723390] [2023-11-24 21:53:59,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:59,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:53:59,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:59,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:53:59,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:53:59,551 INFO L87 Difference]: Start difference. First operand 200 states and 340 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:59,658 INFO L93 Difference]: Finished difference Result 546 states and 930 transitions. [2023-11-24 21:53:59,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:53:59,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-24 21:53:59,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:59,661 INFO L225 Difference]: With dead ends: 546 [2023-11-24 21:53:59,662 INFO L226 Difference]: Without dead ends: 356 [2023-11-24 21:53:59,662 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 [2023-11-24 21:53:59,669 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 352 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:59,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 419 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:53:59,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-11-24 21:53:59,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 200. [2023-11-24 21:53:59,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.693467336683417) internal successors, (337), 199 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 337 transitions. [2023-11-24 21:53:59,700 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 337 transitions. Word has length 33 [2023-11-24 21:53:59,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:53:59,701 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 337 transitions. [2023-11-24 21:53:59,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,702 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 337 transitions. [2023-11-24 21:53:59,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 21:53:59,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:53:59,707 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] [2023-11-24 21:53:59,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:53:59,708 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:53:59,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:53:59,709 INFO L85 PathProgramCache]: Analyzing trace with hash 24461473, now seen corresponding path program 1 times [2023-11-24 21:53:59,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:53:59,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297047934] [2023-11-24 21:53:59,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:53:59,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:53:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:53:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:53:59,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:53:59,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297047934] [2023-11-24 21:53:59,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297047934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:53:59,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:53:59,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:53:59,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097994250] [2023-11-24 21:53:59,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:53:59,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:53:59,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:53:59,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:53:59,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:53:59,837 INFO L87 Difference]: Start difference. First operand 200 states and 337 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:53:59,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:53:59,974 INFO L93 Difference]: Finished difference Result 558 states and 941 transitions. [2023-11-24 21:53:59,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:53:59,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-24 21:53:59,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:53:59,979 INFO L225 Difference]: With dead ends: 558 [2023-11-24 21:53:59,982 INFO L226 Difference]: Without dead ends: 369 [2023-11-24 21:53:59,983 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 [2023-11-24 21:53:59,989 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 357 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:53:59,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 424 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:53:59,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-11-24 21:54:00,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 206. [2023-11-24 21:54:00,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.6634146341463414) internal successors, (341), 205 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 341 transitions. [2023-11-24 21:54:00,019 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 341 transitions. Word has length 33 [2023-11-24 21:54:00,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:00,025 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 341 transitions. [2023-11-24 21:54:00,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,026 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 341 transitions. [2023-11-24 21:54:00,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 21:54:00,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:00,030 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] [2023-11-24 21:54:00,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:54:00,030 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:00,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:00,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1780976861, now seen corresponding path program 1 times [2023-11-24 21:54:00,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:00,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544461673] [2023-11-24 21:54:00,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:00,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:00,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:00,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:00,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544461673] [2023-11-24 21:54:00,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544461673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:00,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:00,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:00,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985754582] [2023-11-24 21:54:00,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:00,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:54:00,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:00,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:54:00,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:00,118 INFO L87 Difference]: Start difference. First operand 206 states and 341 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:00,281 INFO L93 Difference]: Finished difference Result 700 states and 1160 transitions. [2023-11-24 21:54:00,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:54:00,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-24 21:54:00,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:00,287 INFO L225 Difference]: With dead ends: 700 [2023-11-24 21:54:00,288 INFO L226 Difference]: Without dead ends: 506 [2023-11-24 21:54:00,288 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 [2023-11-24 21:54:00,292 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 353 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:00,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 506 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:00,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-11-24 21:54:00,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 336. [2023-11-24 21:54:00,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 1.6507462686567165) internal successors, (553), 335 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 553 transitions. [2023-11-24 21:54:00,322 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 553 transitions. Word has length 33 [2023-11-24 21:54:00,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:00,322 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 553 transitions. [2023-11-24 21:54:00,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,322 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 553 transitions. [2023-11-24 21:54:00,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 21:54:00,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:00,325 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] [2023-11-24 21:54:00,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:54:00,325 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:00,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:00,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1562122143, now seen corresponding path program 1 times [2023-11-24 21:54:00,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:00,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139006976] [2023-11-24 21:54:00,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:00,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:00,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:00,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:00,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139006976] [2023-11-24 21:54:00,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139006976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:00,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:00,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:54:00,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902433625] [2023-11-24 21:54:00,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:00,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:00,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:00,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:00,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:00,418 INFO L87 Difference]: Start difference. First operand 336 states and 553 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:00,500 INFO L93 Difference]: Finished difference Result 800 states and 1323 transitions. [2023-11-24 21:54:00,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:00,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-24 21:54:00,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:00,505 INFO L225 Difference]: With dead ends: 800 [2023-11-24 21:54:00,505 INFO L226 Difference]: Without dead ends: 487 [2023-11-24 21:54:00,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:00,507 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 169 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:00,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 308 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:00,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-11-24 21:54:00,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 485. [2023-11-24 21:54:00,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.6487603305785123) internal successors, (798), 484 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 798 transitions. [2023-11-24 21:54:00,546 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 798 transitions. Word has length 33 [2023-11-24 21:54:00,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:00,547 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 798 transitions. [2023-11-24 21:54:00,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,547 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 798 transitions. [2023-11-24 21:54:00,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 21:54:00,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:00,548 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] [2023-11-24 21:54:00,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:54:00,548 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:00,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:00,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1969942237, now seen corresponding path program 1 times [2023-11-24 21:54:00,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:00,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962031391] [2023-11-24 21:54:00,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:00,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:00,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:00,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:00,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962031391] [2023-11-24 21:54:00,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962031391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:00,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:00,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:00,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53139268] [2023-11-24 21:54:00,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:00,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:54:00,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:00,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:54:00,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:00,626 INFO L87 Difference]: Start difference. First operand 485 states and 798 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:00,775 INFO L93 Difference]: Finished difference Result 1236 states and 2034 transitions. [2023-11-24 21:54:00,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:54:00,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-24 21:54:00,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:00,781 INFO L225 Difference]: With dead ends: 1236 [2023-11-24 21:54:00,782 INFO L226 Difference]: Without dead ends: 767 [2023-11-24 21:54:00,782 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 [2023-11-24 21:54:00,785 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 462 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:00,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 296 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:00,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2023-11-24 21:54:00,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 485. [2023-11-24 21:54:00,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.6322314049586777) internal successors, (790), 484 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 790 transitions. [2023-11-24 21:54:00,834 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 790 transitions. Word has length 33 [2023-11-24 21:54:00,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:00,835 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 790 transitions. [2023-11-24 21:54:00,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:00,835 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 790 transitions. [2023-11-24 21:54:00,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 21:54:00,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:00,837 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] [2023-11-24 21:54:00,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:54:00,837 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:00,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:00,838 INFO L85 PathProgramCache]: Analyzing trace with hash 690078559, now seen corresponding path program 1 times [2023-11-24 21:54:00,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:00,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967790045] [2023-11-24 21:54:00,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:00,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:00,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:00,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:00,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967790045] [2023-11-24 21:54:00,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967790045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:00,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:00,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:00,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753616880] [2023-11-24 21:54:00,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:00,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:54:00,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:00,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:54:00,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:00,937 INFO L87 Difference]: Start difference. First operand 485 states and 790 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:01,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:01,084 INFO L93 Difference]: Finished difference Result 1232 states and 2007 transitions. [2023-11-24 21:54:01,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:54:01,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-24 21:54:01,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:01,090 INFO L225 Difference]: With dead ends: 1232 [2023-11-24 21:54:01,091 INFO L226 Difference]: Without dead ends: 769 [2023-11-24 21:54:01,092 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 [2023-11-24 21:54:01,093 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 444 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:01,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 285 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:01,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2023-11-24 21:54:01,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 485. [2023-11-24 21:54:01,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.615702479338843) internal successors, (782), 484 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:01,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 782 transitions. [2023-11-24 21:54:01,139 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 782 transitions. Word has length 33 [2023-11-24 21:54:01,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:01,139 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 782 transitions. [2023-11-24 21:54:01,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:01,140 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 782 transitions. [2023-11-24 21:54:01,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 21:54:01,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:01,141 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] [2023-11-24 21:54:01,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:54:01,141 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:01,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:01,142 INFO L85 PathProgramCache]: Analyzing trace with hash 103272545, now seen corresponding path program 1 times [2023-11-24 21:54:01,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:01,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584751603] [2023-11-24 21:54:01,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:01,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:01,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:01,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:01,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584751603] [2023-11-24 21:54:01,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584751603] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:01,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:01,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:01,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666798119] [2023-11-24 21:54:01,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:01,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:54:01,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:01,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:54:01,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:01,198 INFO L87 Difference]: Start difference. First operand 485 states and 782 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:01,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:01,361 INFO L93 Difference]: Finished difference Result 1174 states and 1888 transitions. [2023-11-24 21:54:01,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:54:01,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-24 21:54:01,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:01,367 INFO L225 Difference]: With dead ends: 1174 [2023-11-24 21:54:01,367 INFO L226 Difference]: Without dead ends: 705 [2023-11-24 21:54:01,368 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 [2023-11-24 21:54:01,369 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 456 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:01,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 315 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:01,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2023-11-24 21:54:01,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 533. [2023-11-24 21:54:01,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 532 states have (on average 1.5770676691729324) internal successors, (839), 532 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:01,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 839 transitions. [2023-11-24 21:54:01,417 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 839 transitions. Word has length 33 [2023-11-24 21:54:01,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:01,417 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 839 transitions. [2023-11-24 21:54:01,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:01,418 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 839 transitions. [2023-11-24 21:54:01,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-24 21:54:01,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:01,419 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] [2023-11-24 21:54:01,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:54:01,419 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:01,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:01,420 INFO L85 PathProgramCache]: Analyzing trace with hash 804337123, now seen corresponding path program 1 times [2023-11-24 21:54:01,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:01,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152953832] [2023-11-24 21:54:01,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:01,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:01,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:01,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:01,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152953832] [2023-11-24 21:54:01,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152953832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:01,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:01,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:54:01,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718615941] [2023-11-24 21:54:01,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:01,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:01,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:01,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:01,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:01,469 INFO L87 Difference]: Start difference. First operand 533 states and 839 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:01,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:01,588 INFO L93 Difference]: Finished difference Result 1268 states and 2000 transitions. [2023-11-24 21:54:01,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:01,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-24 21:54:01,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:01,593 INFO L225 Difference]: With dead ends: 1268 [2023-11-24 21:54:01,593 INFO L226 Difference]: Without dead ends: 748 [2023-11-24 21:54:01,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:01,595 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 113 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:01,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 279 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:01,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2023-11-24 21:54:01,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 745. [2023-11-24 21:54:01,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 744 states have (on average 1.5564516129032258) internal successors, (1158), 744 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1158 transitions. [2023-11-24 21:54:01,654 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1158 transitions. Word has length 33 [2023-11-24 21:54:01,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:01,655 INFO L495 AbstractCegarLoop]: Abstraction has 745 states and 1158 transitions. [2023-11-24 21:54:01,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:01,655 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1158 transitions. [2023-11-24 21:54:01,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-24 21:54:01,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:01,656 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-24 21:54:01,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:54:01,657 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:01,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:01,657 INFO L85 PathProgramCache]: Analyzing trace with hash -2120894212, now seen corresponding path program 1 times [2023-11-24 21:54:01,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:01,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481092509] [2023-11-24 21:54:01,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:01,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:01,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:01,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481092509] [2023-11-24 21:54:01,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481092509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:01,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:01,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:01,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209592705] [2023-11-24 21:54:01,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:01,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:01,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:01,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:01,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:01,715 INFO L87 Difference]: Start difference. First operand 745 states and 1158 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:01,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:01,850 INFO L93 Difference]: Finished difference Result 1827 states and 2884 transitions. [2023-11-24 21:54:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:01,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-11-24 21:54:01,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:01,858 INFO L225 Difference]: With dead ends: 1827 [2023-11-24 21:54:01,859 INFO L226 Difference]: Without dead ends: 1108 [2023-11-24 21:54:01,860 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 [2023-11-24 21:54:01,861 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 74 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:01,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 369 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:01,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2023-11-24 21:54:01,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1106. [2023-11-24 21:54:01,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1105 states have (on average 1.5737556561085972) internal successors, (1739), 1105 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:01,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1739 transitions. [2023-11-24 21:54:01,964 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1739 transitions. Word has length 44 [2023-11-24 21:54:01,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:01,964 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1739 transitions. [2023-11-24 21:54:01,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:01,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1739 transitions. [2023-11-24 21:54:01,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-24 21:54:01,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:01,966 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-24 21:54:01,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:54:01,966 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:01,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:01,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1697247490, now seen corresponding path program 1 times [2023-11-24 21:54:01,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:01,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962625065] [2023-11-24 21:54:01,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:01,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:02,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-24 21:54:02,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:02,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962625065] [2023-11-24 21:54:02,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962625065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:02,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:02,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:54:02,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681124868] [2023-11-24 21:54:02,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:02,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:02,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:02,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:02,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:02,012 INFO L87 Difference]: Start difference. First operand 1106 states and 1739 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:02,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:02,108 INFO L93 Difference]: Finished difference Result 2164 states and 3420 transitions. [2023-11-24 21:54:02,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:02,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 44 [2023-11-24 21:54:02,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:02,115 INFO L225 Difference]: With dead ends: 2164 [2023-11-24 21:54:02,116 INFO L226 Difference]: Without dead ends: 1084 [2023-11-24 21:54:02,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:02,120 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 171 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 164 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 [2023-11-24 21:54:02,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 164 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:02,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2023-11-24 21:54:02,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1084. [2023-11-24 21:54:02,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 1083 states have (on average 1.5807940904893814) internal successors, (1712), 1083 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:02,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1712 transitions. [2023-11-24 21:54:02,210 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1712 transitions. Word has length 44 [2023-11-24 21:54:02,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:02,210 INFO L495 AbstractCegarLoop]: Abstraction has 1084 states and 1712 transitions. [2023-11-24 21:54:02,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:02,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1712 transitions. [2023-11-24 21:54:02,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-24 21:54:02,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:02,211 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-24 21:54:02,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 21:54:02,212 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:02,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:02,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1821048159, now seen corresponding path program 1 times [2023-11-24 21:54:02,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:02,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705926753] [2023-11-24 21:54:02,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:02,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:02,249 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:02,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:02,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705926753] [2023-11-24 21:54:02,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705926753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:02,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:02,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:02,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952587399] [2023-11-24 21:54:02,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:02,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:02,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:02,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:02,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:02,252 INFO L87 Difference]: Start difference. First operand 1084 states and 1712 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:02,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:02,446 INFO L93 Difference]: Finished difference Result 2745 states and 4400 transitions. [2023-11-24 21:54:02,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:02,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-11-24 21:54:02,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:02,458 INFO L225 Difference]: With dead ends: 2745 [2023-11-24 21:54:02,458 INFO L226 Difference]: Without dead ends: 1687 [2023-11-24 21:54:02,462 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 [2023-11-24 21:54:02,462 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 75 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:02,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 289 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:02,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2023-11-24 21:54:02,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1685. [2023-11-24 21:54:02,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 1684 states have (on average 1.597980997624703) internal successors, (2691), 1684 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:02,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 2691 transitions. [2023-11-24 21:54:02,628 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 2691 transitions. Word has length 45 [2023-11-24 21:54:02,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:02,628 INFO L495 AbstractCegarLoop]: Abstraction has 1685 states and 2691 transitions. [2023-11-24 21:54:02,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:02,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 2691 transitions. [2023-11-24 21:54:02,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-24 21:54:02,630 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:02,630 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-24 21:54:02,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 21:54:02,631 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:02,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:02,631 INFO L85 PathProgramCache]: Analyzing trace with hash -792218992, now seen corresponding path program 1 times [2023-11-24 21:54:02,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:02,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991917331] [2023-11-24 21:54:02,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:02,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:02,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:02,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:02,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991917331] [2023-11-24 21:54:02,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991917331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:02,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:02,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:02,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697572616] [2023-11-24 21:54:02,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:02,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:02,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:02,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:02,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:02,667 INFO L87 Difference]: Start difference. First operand 1685 states and 2691 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:02,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:02,892 INFO L93 Difference]: Finished difference Result 4551 states and 7352 transitions. [2023-11-24 21:54:02,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:02,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2023-11-24 21:54:02,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:02,911 INFO L225 Difference]: With dead ends: 4551 [2023-11-24 21:54:02,912 INFO L226 Difference]: Without dead ends: 2893 [2023-11-24 21:54:02,914 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 [2023-11-24 21:54:02,915 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 80 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:02,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 346 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:02,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2023-11-24 21:54:03,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2891. [2023-11-24 21:54:03,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2891 states, 2890 states have (on average 1.6079584775086506) internal successors, (4647), 2890 states have internal predecessors, (4647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:03,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 4647 transitions. [2023-11-24 21:54:03,143 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 4647 transitions. Word has length 46 [2023-11-24 21:54:03,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:03,143 INFO L495 AbstractCegarLoop]: Abstraction has 2891 states and 4647 transitions. [2023-11-24 21:54:03,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:03,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 4647 transitions. [2023-11-24 21:54:03,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-24 21:54:03,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:03,146 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-24 21:54:03,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 21:54:03,147 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:03,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:03,147 INFO L85 PathProgramCache]: Analyzing trace with hash -368572270, now seen corresponding path program 1 times [2023-11-24 21:54:03,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:03,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155295570] [2023-11-24 21:54:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:03,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-24 21:54:03,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:03,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155295570] [2023-11-24 21:54:03,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155295570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:03,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:03,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:54:03,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056647285] [2023-11-24 21:54:03,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:03,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:03,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:03,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:03,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:03,177 INFO L87 Difference]: Start difference. First operand 2891 states and 4647 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:03,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:03,375 INFO L93 Difference]: Finished difference Result 5734 states and 9238 transitions. [2023-11-24 21:54:03,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:03,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 46 [2023-11-24 21:54:03,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:03,391 INFO L225 Difference]: With dead ends: 5734 [2023-11-24 21:54:03,391 INFO L226 Difference]: Without dead ends: 2870 [2023-11-24 21:54:03,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:03,395 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 168 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 163 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 [2023-11-24 21:54:03,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 163 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2023-11-24 21:54:03,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2870. [2023-11-24 21:54:03,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2869 states have (on average 1.6110142906936216) internal successors, (4622), 2869 states have internal predecessors, (4622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:03,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4622 transitions. [2023-11-24 21:54:03,616 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4622 transitions. Word has length 46 [2023-11-24 21:54:03,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:03,617 INFO L495 AbstractCegarLoop]: Abstraction has 2870 states and 4622 transitions. [2023-11-24 21:54:03,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:03,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4622 transitions. [2023-11-24 21:54:03,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-24 21:54:03,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:03,619 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-24 21:54:03,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 21:54:03,619 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:03,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:03,620 INFO L85 PathProgramCache]: Analyzing trace with hash 77319437, now seen corresponding path program 1 times [2023-11-24 21:54:03,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:03,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660688310] [2023-11-24 21:54:03,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:03,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:03,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:03,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660688310] [2023-11-24 21:54:03,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660688310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:03,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:03,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:54:03,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079522737] [2023-11-24 21:54:03,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:03,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:54:03,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:03,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:54:03,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:03,681 INFO L87 Difference]: Start difference. First operand 2870 states and 4622 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:04,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:04,027 INFO L93 Difference]: Finished difference Result 7299 states and 11787 transitions. [2023-11-24 21:54:04,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:54:04,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-11-24 21:54:04,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:04,048 INFO L225 Difference]: With dead ends: 7299 [2023-11-24 21:54:04,048 INFO L226 Difference]: Without dead ends: 3744 [2023-11-24 21:54:04,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:04,053 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 380 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:04,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 272 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:04,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2023-11-24 21:54:04,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 3744. [2023-11-24 21:54:04,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 3743 states have (on average 1.598984771573604) internal successors, (5985), 3743 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:04,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 5985 transitions. [2023-11-24 21:54:04,412 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 5985 transitions. Word has length 47 [2023-11-24 21:54:04,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:04,413 INFO L495 AbstractCegarLoop]: Abstraction has 3744 states and 5985 transitions. [2023-11-24 21:54:04,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:04,413 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 5985 transitions. [2023-11-24 21:54:04,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-24 21:54:04,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:04,415 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-24 21:54:04,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-24 21:54:04,416 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:04,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:04,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1631486923, now seen corresponding path program 1 times [2023-11-24 21:54:04,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:04,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496622647] [2023-11-24 21:54:04,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:04,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:04,485 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:04,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:04,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496622647] [2023-11-24 21:54:04,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496622647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:04,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:04,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:54:04,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647803686] [2023-11-24 21:54:04,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:04,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:54:04,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:04,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:54:04,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:04,488 INFO L87 Difference]: Start difference. First operand 3744 states and 5985 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:04,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:04,997 INFO L93 Difference]: Finished difference Result 9546 states and 15152 transitions. [2023-11-24 21:54:04,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:54:04,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-11-24 21:54:04,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:05,029 INFO L225 Difference]: With dead ends: 9546 [2023-11-24 21:54:05,030 INFO L226 Difference]: Without dead ends: 5823 [2023-11-24 21:54:05,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:54:05,035 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 648 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:05,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 455 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:05,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5823 states. [2023-11-24 21:54:05,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5823 to 4380. [2023-11-24 21:54:05,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4380 states, 4379 states have (on average 1.5626855446448962) internal successors, (6843), 4379 states have internal predecessors, (6843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:05,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 6843 transitions. [2023-11-24 21:54:05,421 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 6843 transitions. Word has length 52 [2023-11-24 21:54:05,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:05,422 INFO L495 AbstractCegarLoop]: Abstraction has 4380 states and 6843 transitions. [2023-11-24 21:54:05,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:05,422 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 6843 transitions. [2023-11-24 21:54:05,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-24 21:54:05,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:05,430 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-24 21:54:05,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-24 21:54:05,431 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:05,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:05,432 INFO L85 PathProgramCache]: Analyzing trace with hash -690807175, now seen corresponding path program 1 times [2023-11-24 21:54:05,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:05,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795077722] [2023-11-24 21:54:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:05,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:05,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:05,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795077722] [2023-11-24 21:54:05,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795077722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:05,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:05,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:05,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708511783] [2023-11-24 21:54:05,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:05,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:05,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:05,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:05,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:05,480 INFO L87 Difference]: Start difference. First operand 4380 states and 6843 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:05,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:05,991 INFO L93 Difference]: Finished difference Result 9072 states and 14141 transitions. [2023-11-24 21:54:05,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:05,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-11-24 21:54:05,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:06,023 INFO L225 Difference]: With dead ends: 9072 [2023-11-24 21:54:06,023 INFO L226 Difference]: Without dead ends: 4719 [2023-11-24 21:54:06,030 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 [2023-11-24 21:54:06,031 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 122 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:06,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 274 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:06,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4719 states. [2023-11-24 21:54:06,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4719 to 4703. [2023-11-24 21:54:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4703 states, 4702 states have (on average 1.5089323692045937) internal successors, (7095), 4702 states have internal predecessors, (7095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:06,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4703 states to 4703 states and 7095 transitions. [2023-11-24 21:54:06,601 INFO L78 Accepts]: Start accepts. Automaton has 4703 states and 7095 transitions. Word has length 83 [2023-11-24 21:54:06,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:06,601 INFO L495 AbstractCegarLoop]: Abstraction has 4703 states and 7095 transitions. [2023-11-24 21:54:06,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:06,602 INFO L276 IsEmpty]: Start isEmpty. Operand 4703 states and 7095 transitions. [2023-11-24 21:54:06,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-24 21:54:06,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:06,607 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:06,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-24 21:54:06,608 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:06,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:06,608 INFO L85 PathProgramCache]: Analyzing trace with hash -2010245170, now seen corresponding path program 1 times [2023-11-24 21:54:06,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:06,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267279667] [2023-11-24 21:54:06,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:06,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:06,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:06,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:06,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267279667] [2023-11-24 21:54:06,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267279667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:06,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:06,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:06,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044973164] [2023-11-24 21:54:06,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:06,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:06,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:06,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:06,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:06,658 INFO L87 Difference]: Start difference. First operand 4703 states and 7095 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:07,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:07,062 INFO L93 Difference]: Finished difference Result 9870 states and 14851 transitions. [2023-11-24 21:54:07,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:07,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 [2023-11-24 21:54:07,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:07,076 INFO L225 Difference]: With dead ends: 9870 [2023-11-24 21:54:07,076 INFO L226 Difference]: Without dead ends: 5205 [2023-11-24 21:54:07,083 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 [2023-11-24 21:54:07,083 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 120 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:07,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 273 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:07,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5205 states. [2023-11-24 21:54:07,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5205 to 5181. [2023-11-24 21:54:07,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5181 states, 5180 states have (on average 1.455984555984556) internal successors, (7542), 5180 states have internal predecessors, (7542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:07,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 7542 transitions. [2023-11-24 21:54:07,562 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 7542 transitions. Word has length 84 [2023-11-24 21:54:07,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:07,562 INFO L495 AbstractCegarLoop]: Abstraction has 5181 states and 7542 transitions. [2023-11-24 21:54:07,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:07,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 7542 transitions. [2023-11-24 21:54:07,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-24 21:54:07,569 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:07,569 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:07,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-24 21:54:07,569 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:07,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:07,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1399303287, now seen corresponding path program 1 times [2023-11-24 21:54:07,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:07,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865436770] [2023-11-24 21:54:07,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:07,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:07,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:07,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865436770] [2023-11-24 21:54:07,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865436770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:07,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:07,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:07,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94848877] [2023-11-24 21:54:07,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:07,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:07,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:07,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:07,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:07,617 INFO L87 Difference]: Start difference. First operand 5181 states and 7542 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:08,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:08,065 INFO L93 Difference]: Finished difference Result 10679 states and 15545 transitions. [2023-11-24 21:54:08,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:08,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-11-24 21:54:08,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:08,079 INFO L225 Difference]: With dead ends: 10679 [2023-11-24 21:54:08,079 INFO L226 Difference]: Without dead ends: 5554 [2023-11-24 21:54:08,085 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 [2023-11-24 21:54:08,086 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 115 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:08,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 274 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:08,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5554 states. [2023-11-24 21:54:08,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5554 to 4968. [2023-11-24 21:54:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4968 states, 4967 states have (on average 1.3917857861888463) internal successors, (6913), 4967 states have internal predecessors, (6913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:08,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4968 states to 4968 states and 6913 transitions. [2023-11-24 21:54:08,588 INFO L78 Accepts]: Start accepts. Automaton has 4968 states and 6913 transitions. Word has length 85 [2023-11-24 21:54:08,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:08,588 INFO L495 AbstractCegarLoop]: Abstraction has 4968 states and 6913 transitions. [2023-11-24 21:54:08,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:08,589 INFO L276 IsEmpty]: Start isEmpty. Operand 4968 states and 6913 transitions. [2023-11-24 21:54:08,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-24 21:54:08,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:08,598 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:08,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-24 21:54:08,598 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:08,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:08,599 INFO L85 PathProgramCache]: Analyzing trace with hash 2120377808, now seen corresponding path program 1 times [2023-11-24 21:54:08,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:08,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180128798] [2023-11-24 21:54:08,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:08,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:08,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 21:54:08,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:08,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180128798] [2023-11-24 21:54:08,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180128798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:08,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:08,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:54:08,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633703935] [2023-11-24 21:54:08,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:08,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:54:08,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:08,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:54:08,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:08,705 INFO L87 Difference]: Start difference. First operand 4968 states and 6913 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:09,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:09,479 INFO L93 Difference]: Finished difference Result 9264 states and 12829 transitions. [2023-11-24 21:54:09,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:54:09,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-11-24 21:54:09,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:09,491 INFO L225 Difference]: With dead ends: 9264 [2023-11-24 21:54:09,492 INFO L226 Difference]: Without dead ends: 4783 [2023-11-24 21:54:09,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:09,499 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 420 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:09,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 341 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:09,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2023-11-24 21:54:09,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 4685. [2023-11-24 21:54:09,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4685 states, 4684 states have (on average 1.339666951323655) internal successors, (6275), 4684 states have internal predecessors, (6275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:09,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 6275 transitions. [2023-11-24 21:54:09,993 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 6275 transitions. Word has length 86 [2023-11-24 21:54:09,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:09,993 INFO L495 AbstractCegarLoop]: Abstraction has 4685 states and 6275 transitions. [2023-11-24 21:54:09,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:09,993 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 6275 transitions. [2023-11-24 21:54:10,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-24 21:54:10,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:10,004 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:10,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-24 21:54:10,005 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:10,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:10,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1702675469, now seen corresponding path program 1 times [2023-11-24 21:54:10,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:10,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352694211] [2023-11-24 21:54:10,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:10,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:10,052 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-24 21:54:10,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:10,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352694211] [2023-11-24 21:54:10,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352694211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:10,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:10,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:54:10,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681282737] [2023-11-24 21:54:10,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:10,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:10,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:10,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:10,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:10,055 INFO L87 Difference]: Start difference. First operand 4685 states and 6275 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:10,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:10,436 INFO L93 Difference]: Finished difference Result 8925 states and 11947 transitions. [2023-11-24 21:54:10,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:10,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2023-11-24 21:54:10,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:10,447 INFO L225 Difference]: With dead ends: 8925 [2023-11-24 21:54:10,447 INFO L226 Difference]: Without dead ends: 4635 [2023-11-24 21:54:10,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:10,453 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 33 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:10,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 269 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:10,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4635 states. [2023-11-24 21:54:10,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4635 to 4635. [2023-11-24 21:54:10,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4635 states, 4634 states have (on average 1.3321104876996115) internal successors, (6173), 4634 states have internal predecessors, (6173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:10,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4635 states to 4635 states and 6173 transitions. [2023-11-24 21:54:10,782 INFO L78 Accepts]: Start accepts. Automaton has 4635 states and 6173 transitions. Word has length 112 [2023-11-24 21:54:10,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:10,783 INFO L495 AbstractCegarLoop]: Abstraction has 4635 states and 6173 transitions. [2023-11-24 21:54:10,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:10,783 INFO L276 IsEmpty]: Start isEmpty. Operand 4635 states and 6173 transitions. [2023-11-24 21:54:10,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-24 21:54:10,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:10,795 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:10,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-24 21:54:10,795 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:10,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:10,796 INFO L85 PathProgramCache]: Analyzing trace with hash -102570062, now seen corresponding path program 1 times [2023-11-24 21:54:10,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:10,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411459880] [2023-11-24 21:54:10,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:10,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-24 21:54:10,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:10,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411459880] [2023-11-24 21:54:10,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411459880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:10,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:10,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:54:10,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978978768] [2023-11-24 21:54:10,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:10,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:54:10,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:10,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:54:10,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:10,905 INFO L87 Difference]: Start difference. First operand 4635 states and 6173 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:11,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:11,359 INFO L93 Difference]: Finished difference Result 8215 states and 10971 transitions. [2023-11-24 21:54:11,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:54:11,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2023-11-24 21:54:11,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:11,376 INFO L225 Difference]: With dead ends: 8215 [2023-11-24 21:54:11,376 INFO L226 Difference]: Without dead ends: 4559 [2023-11-24 21:54:11,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:11,380 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 287 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:11,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 275 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:11,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4559 states. [2023-11-24 21:54:11,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4559 to 4557. [2023-11-24 21:54:11,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4557 states, 4556 states have (on average 1.3072870939420544) internal successors, (5956), 4556 states have internal predecessors, (5956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4557 states to 4557 states and 5956 transitions. [2023-11-24 21:54:11,774 INFO L78 Accepts]: Start accepts. Automaton has 4557 states and 5956 transitions. Word has length 124 [2023-11-24 21:54:11,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:11,775 INFO L495 AbstractCegarLoop]: Abstraction has 4557 states and 5956 transitions. [2023-11-24 21:54:11,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:11,775 INFO L276 IsEmpty]: Start isEmpty. Operand 4557 states and 5956 transitions. [2023-11-24 21:54:11,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-24 21:54:11,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:11,785 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:11,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-24 21:54:11,786 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:11,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:11,786 INFO L85 PathProgramCache]: Analyzing trace with hash -188773814, now seen corresponding path program 1 times [2023-11-24 21:54:11,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:11,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096064327] [2023-11-24 21:54:11,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:11,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:11,841 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-24 21:54:11,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:11,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096064327] [2023-11-24 21:54:11,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096064327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:11,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:11,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:54:11,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012351634] [2023-11-24 21:54:11,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:11,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:11,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:11,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:11,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:11,844 INFO L87 Difference]: Start difference. First operand 4557 states and 5956 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:12,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:12,236 INFO L93 Difference]: Finished difference Result 8702 states and 11371 transitions. [2023-11-24 21:54:12,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:12,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-11-24 21:54:12,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:12,247 INFO L225 Difference]: With dead ends: 8702 [2023-11-24 21:54:12,247 INFO L226 Difference]: Without dead ends: 4539 [2023-11-24 21:54:12,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:12,254 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 23 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:12,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 267 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:12,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4539 states. [2023-11-24 21:54:12,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4539 to 4519. [2023-11-24 21:54:12,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4519 states, 4518 states have (on average 1.3005754758742807) internal successors, (5876), 4518 states have internal predecessors, (5876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:12,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4519 states to 4519 states and 5876 transitions. [2023-11-24 21:54:12,571 INFO L78 Accepts]: Start accepts. Automaton has 4519 states and 5876 transitions. Word has length 130 [2023-11-24 21:54:12,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:12,571 INFO L495 AbstractCegarLoop]: Abstraction has 4519 states and 5876 transitions. [2023-11-24 21:54:12,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:12,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4519 states and 5876 transitions. [2023-11-24 21:54:12,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-24 21:54:12,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:12,581 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:12,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-24 21:54:12,581 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:12,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:12,582 INFO L85 PathProgramCache]: Analyzing trace with hash 56047882, now seen corresponding path program 1 times [2023-11-24 21:54:12,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:12,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112626200] [2023-11-24 21:54:12,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:12,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:12,634 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-24 21:54:12,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:12,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112626200] [2023-11-24 21:54:12,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112626200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:12,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:12,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:54:12,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163749748] [2023-11-24 21:54:12,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:12,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:12,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:12,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:12,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:12,637 INFO L87 Difference]: Start difference. First operand 4519 states and 5876 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:12,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:12,993 INFO L93 Difference]: Finished difference Result 8652 states and 11251 transitions. [2023-11-24 21:54:12,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:12,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-11-24 21:54:12,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:13,004 INFO L225 Difference]: With dead ends: 8652 [2023-11-24 21:54:13,004 INFO L226 Difference]: Without dead ends: 4509 [2023-11-24 21:54:13,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:13,010 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 19 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:13,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 264 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:13,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2023-11-24 21:54:13,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 4489. [2023-11-24 21:54:13,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4489 states, 4488 states have (on average 1.2934491978609626) internal successors, (5805), 4488 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:13,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4489 states to 4489 states and 5805 transitions. [2023-11-24 21:54:13,376 INFO L78 Accepts]: Start accepts. Automaton has 4489 states and 5805 transitions. Word has length 130 [2023-11-24 21:54:13,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:13,376 INFO L495 AbstractCegarLoop]: Abstraction has 4489 states and 5805 transitions. [2023-11-24 21:54:13,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:13,377 INFO L276 IsEmpty]: Start isEmpty. Operand 4489 states and 5805 transitions. [2023-11-24 21:54:13,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-24 21:54:13,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:13,386 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:13,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-24 21:54:13,386 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:13,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:13,387 INFO L85 PathProgramCache]: Analyzing trace with hash 307440907, now seen corresponding path program 1 times [2023-11-24 21:54:13,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:13,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433125853] [2023-11-24 21:54:13,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:13,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:13,502 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-24 21:54:13,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:13,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433125853] [2023-11-24 21:54:13,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433125853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:13,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:13,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:54:13,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873521128] [2023-11-24 21:54:13,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:13,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:54:13,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:13,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:54:13,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:13,505 INFO L87 Difference]: Start difference. First operand 4489 states and 5805 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:13,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:13,942 INFO L93 Difference]: Finished difference Result 7308 states and 9499 transitions. [2023-11-24 21:54:13,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:54:13,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-11-24 21:54:13,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:13,949 INFO L225 Difference]: With dead ends: 7308 [2023-11-24 21:54:13,949 INFO L226 Difference]: Without dead ends: 3195 [2023-11-24 21:54:13,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:13,955 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 261 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:13,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 250 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:54:13,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2023-11-24 21:54:14,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3193. [2023-11-24 21:54:14,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3193 states, 3192 states have (on average 1.2600250626566416) internal successors, (4022), 3192 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:14,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3193 states to 3193 states and 4022 transitions. [2023-11-24 21:54:14,252 INFO L78 Accepts]: Start accepts. Automaton has 3193 states and 4022 transitions. Word has length 133 [2023-11-24 21:54:14,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:14,253 INFO L495 AbstractCegarLoop]: Abstraction has 3193 states and 4022 transitions. [2023-11-24 21:54:14,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:14,253 INFO L276 IsEmpty]: Start isEmpty. Operand 3193 states and 4022 transitions. [2023-11-24 21:54:14,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-24 21:54:14,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:14,260 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:14,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-24 21:54:14,261 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:14,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:14,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1540318430, now seen corresponding path program 1 times [2023-11-24 21:54:14,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:14,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103870734] [2023-11-24 21:54:14,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:14,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 21:54:14,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:14,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103870734] [2023-11-24 21:54:14,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103870734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:14,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:14,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:54:14,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225573665] [2023-11-24 21:54:14,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:14,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:54:14,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:14,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:54:14,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:14,396 INFO L87 Difference]: Start difference. First operand 3193 states and 4022 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:14,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:14,707 INFO L93 Difference]: Finished difference Result 5162 states and 6506 transitions. [2023-11-24 21:54:14,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:54:14,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-11-24 21:54:14,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:14,712 INFO L225 Difference]: With dead ends: 5162 [2023-11-24 21:54:14,712 INFO L226 Difference]: Without dead ends: 2042 [2023-11-24 21:54:14,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:14,717 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 263 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:14,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 245 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:14,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2023-11-24 21:54:14,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 2040. [2023-11-24 21:54:14,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 2039 states have (on average 1.2256007846983816) internal successors, (2499), 2039 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 2499 transitions. [2023-11-24 21:54:14,969 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 2499 transitions. Word has length 133 [2023-11-24 21:54:14,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:14,969 INFO L495 AbstractCegarLoop]: Abstraction has 2040 states and 2499 transitions. [2023-11-24 21:54:14,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:14,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 2499 transitions. [2023-11-24 21:54:14,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-24 21:54:14,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:14,973 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:14,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-24 21:54:14,974 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:14,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:14,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1562436170, now seen corresponding path program 1 times [2023-11-24 21:54:14,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:14,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216622892] [2023-11-24 21:54:14,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:14,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-24 21:54:15,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:15,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216622892] [2023-11-24 21:54:15,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216622892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:15,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:15,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:15,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248495129] [2023-11-24 21:54:15,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:15,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:15,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:15,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:15,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:15,068 INFO L87 Difference]: Start difference. First operand 2040 states and 2499 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:15,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:15,325 INFO L93 Difference]: Finished difference Result 3672 states and 4536 transitions. [2023-11-24 21:54:15,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:15,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 171 [2023-11-24 21:54:15,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:15,330 INFO L225 Difference]: With dead ends: 3672 [2023-11-24 21:54:15,330 INFO L226 Difference]: Without dead ends: 1978 [2023-11-24 21:54:15,336 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 [2023-11-24 21:54:15,336 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 1 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:15,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 267 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:15,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2023-11-24 21:54:15,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1920. [2023-11-24 21:54:15,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1919 states have (on average 1.2094841063053674) internal successors, (2321), 1919 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:15,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2321 transitions. [2023-11-24 21:54:15,539 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2321 transitions. Word has length 171 [2023-11-24 21:54:15,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:15,540 INFO L495 AbstractCegarLoop]: Abstraction has 1920 states and 2321 transitions. [2023-11-24 21:54:15,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:15,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2321 transitions. [2023-11-24 21:54:15,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-24 21:54:15,545 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:15,545 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:15,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-24 21:54:15,546 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:15,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:15,546 INFO L85 PathProgramCache]: Analyzing trace with hash 2092525293, now seen corresponding path program 1 times [2023-11-24 21:54:15,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:15,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006780509] [2023-11-24 21:54:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:15,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:15,604 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-24 21:54:15,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:15,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006780509] [2023-11-24 21:54:15,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006780509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:15,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:15,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:15,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50432984] [2023-11-24 21:54:15,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:15,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:15,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:15,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:15,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:15,607 INFO L87 Difference]: Start difference. First operand 1920 states and 2321 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:15,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:15,837 INFO L93 Difference]: Finished difference Result 4125 states and 5024 transitions. [2023-11-24 21:54:15,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:15,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 177 [2023-11-24 21:54:15,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:15,842 INFO L225 Difference]: With dead ends: 4125 [2023-11-24 21:54:15,842 INFO L226 Difference]: Without dead ends: 2547 [2023-11-24 21:54:15,844 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 [2023-11-24 21:54:15,845 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 124 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:15,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 263 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:15,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2023-11-24 21:54:16,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2202. [2023-11-24 21:54:16,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 2201 states have (on average 1.1926397092230805) internal successors, (2625), 2201 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 2625 transitions. [2023-11-24 21:54:16,034 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 2625 transitions. Word has length 177 [2023-11-24 21:54:16,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:16,034 INFO L495 AbstractCegarLoop]: Abstraction has 2202 states and 2625 transitions. [2023-11-24 21:54:16,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:16,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 2625 transitions. [2023-11-24 21:54:16,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-24 21:54:16,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:16,039 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:16,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-24 21:54:16,039 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:16,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:16,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1666060306, now seen corresponding path program 1 times [2023-11-24 21:54:16,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:16,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793453131] [2023-11-24 21:54:16,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:16,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-24 21:54:16,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:16,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793453131] [2023-11-24 21:54:16,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793453131] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:54:16,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281356273] [2023-11-24 21:54:16,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:16,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:16,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:16,624 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:54:16,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 21:54:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:16,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-24 21:54:16,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 80 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-24 21:54:17,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:54:17,854 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 80 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-24 21:54:17,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281356273] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:54:17,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:54:17,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 27 [2023-11-24 21:54:17,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300252742] [2023-11-24 21:54:17,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:54:17,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-24 21:54:17,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:17,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-24 21:54:17,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2023-11-24 21:54:17,858 INFO L87 Difference]: Start difference. First operand 2202 states and 2625 transitions. Second operand has 27 states, 27 states have (on average 16.333333333333332) internal successors, (441), 27 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:21,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:21,578 INFO L93 Difference]: Finished difference Result 9197 states and 10930 transitions. [2023-11-24 21:54:21,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-24 21:54:21,579 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 16.333333333333332) internal successors, (441), 27 states have internal predecessors, (441), 0 states have call successors, (0), 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 180 [2023-11-24 21:54:21,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:21,590 INFO L225 Difference]: With dead ends: 9197 [2023-11-24 21:54:21,590 INFO L226 Difference]: Without dead ends: 7324 [2023-11-24 21:54:21,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=745, Invalid=5735, Unknown=0, NotChecked=0, Total=6480 [2023-11-24 21:54:21,597 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 3115 mSDsluCounter, 9825 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3115 SdHoareTripleChecker+Valid, 10313 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:21,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3115 Valid, 10313 Invalid, 1602 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 21:54:21,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7324 states. [2023-11-24 21:54:21,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7324 to 3161. [2023-11-24 21:54:21,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3161 states, 3160 states have (on average 1.1898734177215189) internal successors, (3760), 3160 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:21,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3161 states to 3161 states and 3760 transitions. [2023-11-24 21:54:21,930 INFO L78 Accepts]: Start accepts. Automaton has 3161 states and 3760 transitions. Word has length 180 [2023-11-24 21:54:21,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:21,931 INFO L495 AbstractCegarLoop]: Abstraction has 3161 states and 3760 transitions. [2023-11-24 21:54:21,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 16.333333333333332) internal successors, (441), 27 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:21,931 INFO L276 IsEmpty]: Start isEmpty. Operand 3161 states and 3760 transitions. [2023-11-24 21:54:21,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-11-24 21:54:21,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:21,937 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:21,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-24 21:54:22,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39c36d69-2fdd-44c1-b5b8-2bda3c1a0b04/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:54:22,143 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:22,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:22,143 INFO L85 PathProgramCache]: Analyzing trace with hash 169367581, now seen corresponding path program 1 times [2023-11-24 21:54:22,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:22,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246093615] [2023-11-24 21:54:22,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:22,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:22,240 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-24 21:54:22,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:22,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246093615] [2023-11-24 21:54:22,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246093615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:22,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:22,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:22,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087735164] [2023-11-24 21:54:22,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:22,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:22,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:22,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:22,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:22,243 INFO L87 Difference]: Start difference. First operand 3161 states and 3760 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:22,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:22,492 INFO L93 Difference]: Finished difference Result 4927 states and 5833 transitions. [2023-11-24 21:54:22,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:22,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 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 246 [2023-11-24 21:54:22,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:22,497 INFO L225 Difference]: With dead ends: 4927 [2023-11-24 21:54:22,498 INFO L226 Difference]: Without dead ends: 2141 [2023-11-24 21:54:22,500 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 [2023-11-24 21:54:22,501 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 3 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:22,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 280 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:22,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2023-11-24 21:54:22,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 2108. [2023-11-24 21:54:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2107 states have (on average 1.161841480778358) internal successors, (2448), 2107 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 2448 transitions. [2023-11-24 21:54:22,665 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 2448 transitions. Word has length 246 [2023-11-24 21:54:22,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:22,665 INFO L495 AbstractCegarLoop]: Abstraction has 2108 states and 2448 transitions. [2023-11-24 21:54:22,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:22,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 2448 transitions. [2023-11-24 21:54:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-11-24 21:54:22,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:22,669 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:22,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-24 21:54:22,670 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:22,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:22,671 INFO L85 PathProgramCache]: Analyzing trace with hash -84910890, now seen corresponding path program 1 times [2023-11-24 21:54:22,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:22,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789581494] [2023-11-24 21:54:22,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:22,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:22,848 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-24 21:54:22,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:22,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789581494] [2023-11-24 21:54:22,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789581494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:22,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:22,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:54:22,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247159825] [2023-11-24 21:54:22,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:22,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:54:22,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:22,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:54:22,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:22,852 INFO L87 Difference]: Start difference. First operand 2108 states and 2448 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:23,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:23,107 INFO L93 Difference]: Finished difference Result 3951 states and 4599 transitions. [2023-11-24 21:54:23,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:54:23,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 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 254 [2023-11-24 21:54:23,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:23,111 INFO L225 Difference]: With dead ends: 3951 [2023-11-24 21:54:23,112 INFO L226 Difference]: Without dead ends: 2109 [2023-11-24 21:54:23,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:23,114 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 181 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:23,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 192 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:23,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2023-11-24 21:54:23,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 2108. [2023-11-24 21:54:23,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2107 states have (on average 1.1523493118177504) internal successors, (2428), 2107 states have internal predecessors, (2428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:23,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 2428 transitions. [2023-11-24 21:54:23,287 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 2428 transitions. Word has length 254 [2023-11-24 21:54:23,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:23,287 INFO L495 AbstractCegarLoop]: Abstraction has 2108 states and 2428 transitions. [2023-11-24 21:54:23,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:23,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 2428 transitions. [2023-11-24 21:54:23,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-11-24 21:54:23,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:23,291 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:23,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-24 21:54:23,292 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:23,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:23,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1676121475, now seen corresponding path program 1 times [2023-11-24 21:54:23,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:23,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312942967] [2023-11-24 21:54:23,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:23,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-24 21:54:23,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:23,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312942967] [2023-11-24 21:54:23,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312942967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:23,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:23,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:23,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951326205] [2023-11-24 21:54:23,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:23,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:23,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:23,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:23,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:23,385 INFO L87 Difference]: Start difference. First operand 2108 states and 2428 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:23,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:23,509 INFO L93 Difference]: Finished difference Result 2484 states and 2849 transitions. [2023-11-24 21:54:23,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:23,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 256 [2023-11-24 21:54:23,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:23,511 INFO L225 Difference]: With dead ends: 2484 [2023-11-24 21:54:23,511 INFO L226 Difference]: Without dead ends: 751 [2023-11-24 21:54:23,514 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 [2023-11-24 21:54:23,515 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 26 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:23,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 265 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:23,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2023-11-24 21:54:23,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 751. [2023-11-24 21:54:23,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 1.112) internal successors, (834), 750 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:23,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 834 transitions. [2023-11-24 21:54:23,582 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 834 transitions. Word has length 256 [2023-11-24 21:54:23,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:23,582 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 834 transitions. [2023-11-24 21:54:23,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:23,582 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 834 transitions. [2023-11-24 21:54:23,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-11-24 21:54:23,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:54:23,584 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-24 21:54:23,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-24 21:54:23,585 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:54:23,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:23,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2018575222, now seen corresponding path program 1 times [2023-11-24 21:54:23,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:54:23,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506916210] [2023-11-24 21:54:23,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:23,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:54:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:23,664 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-24 21:54:23,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:54:23,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506916210] [2023-11-24 21:54:23,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506916210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:23,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:23,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:23,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76293975] [2023-11-24 21:54:23,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:23,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:23,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:54:23,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:23,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:23,667 INFO L87 Difference]: Start difference. First operand 751 states and 834 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:23,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:54:23,764 INFO L93 Difference]: Finished difference Result 1012 states and 1124 transitions. [2023-11-24 21:54:23,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:23,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 270 [2023-11-24 21:54:23,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:54:23,767 INFO L225 Difference]: With dead ends: 1012 [2023-11-24 21:54:23,767 INFO L226 Difference]: Without dead ends: 0 [2023-11-24 21:54:23,770 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 [2023-11-24 21:54:23,771 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 3 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:54:23,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 249 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:54:23,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-24 21:54:23,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-24 21:54:23,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:23,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-24 21:54:23,779 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 270 [2023-11-24 21:54:23,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:54:23,779 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-24 21:54:23,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:23,779 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-24 21:54:23,780 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-24 21:54:23,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 21:54:23,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-24 21:54:23,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-24 21:54:37,125 WARN L293 SmtUtils]: Spent 13.33s on a formula simplification. DAG size of input: 229 DAG size of output: 289 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)