./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d0892f-d472-4065-937b-53d1ecb107e5/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d0892f-d472-4065-937b-53d1ecb107e5/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d0892f-d472-4065-937b-53d1ecb107e5/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d0892f-d472-4065-937b-53d1ecb107e5/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d0892f-d472-4065-937b-53d1ecb107e5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d0892f-d472-4065-937b-53d1ecb107e5/bin/uautomizer-verify-LYvppIcaGC --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 d7b31703d13ddb01e2d77e44fcd8433b76663feaf751198b77497c752932cfd2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:36:17,714 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:36:17,788 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d0892f-d472-4065-937b-53d1ecb107e5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 22:36:17,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:36:17,795 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:36:17,833 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:36:17,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:36:17,834 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:36:17,835 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:36:17,835 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:36:17,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:36:17,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:36:17,835 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:36:17,835 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:36:17,836 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:36:17,836 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:36:17,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:36:17,836 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:36:17,836 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:36:17,836 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:36:17,836 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:36:17,836 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:36:17,836 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:36:17,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:36:17,837 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:36:17,837 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:36:17,837 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:36:17,837 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:36:17,837 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:36:17,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:36:17,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:36:17,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:36:17,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:36:17,838 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:36:17,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:36:17,838 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:36:17,838 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:36:17,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:36:17,838 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:36:17,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:36:17,841 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:36:17,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:36:17,841 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:36:17,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:36:17,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:36:17,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:36:17,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:36:17,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:36:17,842 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_15d0892f-d472-4065-937b-53d1ecb107e5/bin/uautomizer-verify-LYvppIcaGC 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 -> d7b31703d13ddb01e2d77e44fcd8433b76663feaf751198b77497c752932cfd2 [2024-11-23 22:36:18,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:36:18,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:36:18,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:36:18,273 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:36:18,273 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:36:18,276 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d0892f-d472-4065-937b-53d1ecb107e5/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-10.i [2024-11-23 22:36:21,761 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d0892f-d472-4065-937b-53d1ecb107e5/bin/uautomizer-verify-LYvppIcaGC/data/eb22b3cfe/d87a2544cd2c47dd84992f781e1a79e9/FLAGf487ec917 [2024-11-23 22:36:22,244 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:36:22,245 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d0892f-d472-4065-937b-53d1ecb107e5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-10.i [2024-11-23 22:36:22,256 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d0892f-d472-4065-937b-53d1ecb107e5/bin/uautomizer-verify-LYvppIcaGC/data/eb22b3cfe/d87a2544cd2c47dd84992f781e1a79e9/FLAGf487ec917 [2024-11-23 22:36:22,276 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d0892f-d472-4065-937b-53d1ecb107e5/bin/uautomizer-verify-LYvppIcaGC/data/eb22b3cfe/d87a2544cd2c47dd84992f781e1a79e9 [2024-11-23 22:36:22,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:36:22,282 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:36:22,284 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:36:22,284 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:36:22,291 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:36:22,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:36:22" (1/1) ... [2024-11-23 22:36:22,296 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f226f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:22, skipping insertion in model container [2024-11-23 22:36:22,296 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:36:22" (1/1) ... [2024-11-23 22:36:22,325 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:36:22,535 WARN L250 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_15d0892f-d472-4065-937b-53d1ecb107e5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-10.i[915,928] [2024-11-23 22:36:22,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:36:22,673 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:36:22,689 WARN L250 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_15d0892f-d472-4065-937b-53d1ecb107e5/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-10.i[915,928] [2024-11-23 22:36:22,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:36:22,776 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:36:22,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:22 WrapperNode [2024-11-23 22:36:22,778 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:36:22,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:36:22,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:36:22,781 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:36:22,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:22" (1/1) ... [2024-11-23 22:36:22,817 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:22" (1/1) ... [2024-11-23 22:36:22,897 INFO L138 Inliner]: procedures = 26, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 165 [2024-11-23 22:36:22,898 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:36:22,899 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:36:22,899 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:36:22,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:36:22,913 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:22" (1/1) ... [2024-11-23 22:36:22,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:22" (1/1) ... [2024-11-23 22:36:22,922 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:22" (1/1) ... [2024-11-23 22:36:22,963 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]. [2024-11-23 22:36:22,967 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:22" (1/1) ... [2024-11-23 22:36:22,968 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:22" (1/1) ... [2024-11-23 22:36:22,993 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:22" (1/1) ... [2024-11-23 22:36:22,997 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:22" (1/1) ... [2024-11-23 22:36:23,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:22" (1/1) ... [2024-11-23 22:36:23,009 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:22" (1/1) ... [2024-11-23 22:36:23,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:22" (1/1) ... [2024-11-23 22:36:23,023 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:36:23,024 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:36:23,025 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:36:23,026 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:36:23,027 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:22" (1/1) ... [2024-11-23 22:36:23,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:36:23,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d0892f-d472-4065-937b-53d1ecb107e5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:36:23,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d0892f-d472-4065-937b-53d1ecb107e5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:36:23,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15d0892f-d472-4065-937b-53d1ecb107e5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:36:23,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:36:23,122 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 22:36:23,122 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 22:36:23,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:36:23,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:36:23,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:36:23,219 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:36:23,222 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:36:23,912 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-23 22:36:23,912 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:36:23,933 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:36:23,934 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 22:36:23,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:36:23 BoogieIcfgContainer [2024-11-23 22:36:23,935 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:36:23,938 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:36:23,938 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:36:23,944 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:36:23,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:36:22" (1/3) ... [2024-11-23 22:36:23,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15dd4066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:36:23, skipping insertion in model container [2024-11-23 22:36:23,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:22" (2/3) ... [2024-11-23 22:36:23,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15dd4066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:36:23, skipping insertion in model container [2024-11-23 22:36:23,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:36:23" (3/3) ... [2024-11-23 22:36:23,947 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-10.i [2024-11-23 22:36:23,969 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:36:23,972 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount50_file-10.i that has 2 procedures, 74 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 22:36:24,098 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:36:24,115 INFO L333 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, 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;@203efcd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:36:24,115 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 22:36:24,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 54 states have internal predecessors, (74), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-23 22:36:24,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-23 22:36:24,145 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:24,146 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:24,146 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:24,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:24,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1915142532, now seen corresponding path program 1 times [2024-11-23 22:36:24,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:24,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311963063] [2024-11-23 22:36:24,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:24,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:25,461 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:36:25,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:25,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311963063] [2024-11-23 22:36:25,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311963063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:25,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:25,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:36:25,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451772231] [2024-11-23 22:36:25,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:25,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:36:25,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:25,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:36:25,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:36:25,509 INFO L87 Difference]: Start difference. First operand has 74 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 54 states have internal predecessors, (74), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:36:25,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:25,852 INFO L93 Difference]: Finished difference Result 209 states and 357 transitions. [2024-11-23 22:36:25,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:36:25,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 122 [2024-11-23 22:36:25,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:25,872 INFO L225 Difference]: With dead ends: 209 [2024-11-23 22:36:25,872 INFO L226 Difference]: Without dead ends: 138 [2024-11-23 22:36:25,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:36:25,884 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 72 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:25,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 384 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:36:25,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-23 22:36:25,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 104. [2024-11-23 22:36:25,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 65 states have internal predecessors, (82), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-23 22:36:25,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 154 transitions. [2024-11-23 22:36:25,986 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 154 transitions. Word has length 122 [2024-11-23 22:36:25,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:25,991 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 154 transitions. [2024-11-23 22:36:25,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:36:25,991 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 154 transitions. [2024-11-23 22:36:25,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 22:36:25,998 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:25,998 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:25,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 22:36:25,999 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:26,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:26,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2009744545, now seen corresponding path program 1 times [2024-11-23 22:36:26,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:26,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128218643] [2024-11-23 22:36:26,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:26,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:54,136 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:36:54,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:54,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128218643] [2024-11-23 22:36:54,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128218643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:54,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:54,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 22:36:54,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107200169] [2024-11-23 22:36:54,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:54,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 22:36:54,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:54,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 22:36:54,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:36:54,143 INFO L87 Difference]: Start difference. First operand 104 states and 154 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:36:56,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:56,817 INFO L93 Difference]: Finished difference Result 341 states and 493 transitions. [2024-11-23 22:36:56,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:36:56,818 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 123 [2024-11-23 22:36:56,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:56,826 INFO L225 Difference]: With dead ends: 341 [2024-11-23 22:36:56,826 INFO L226 Difference]: Without dead ends: 274 [2024-11-23 22:36:56,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2024-11-23 22:36:56,831 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 701 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:56,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 522 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 22:36:56,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-23 22:36:56,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 187. [2024-11-23 22:36:56,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 128 states have (on average 1.296875) internal successors, (166), 129 states have internal predecessors, (166), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-23 22:36:56,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 274 transitions. [2024-11-23 22:36:56,899 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 274 transitions. Word has length 123 [2024-11-23 22:36:56,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:56,900 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 274 transitions. [2024-11-23 22:36:56,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:36:56,901 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 274 transitions. [2024-11-23 22:36:56,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 22:36:56,903 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:56,904 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:56,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:36:56,904 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:56,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:56,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1329686175, now seen corresponding path program 1 times [2024-11-23 22:36:56,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:56,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219008044] [2024-11-23 22:36:56,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:56,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:38:10,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:38:10,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219008044] [2024-11-23 22:38:10,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219008044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:38:10,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:38:10,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 22:38:10,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464449432] [2024-11-23 22:38:10,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:10,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 22:38:10,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:38:10,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 22:38:10,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:38:10,166 INFO L87 Difference]: Start difference. First operand 187 states and 274 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:38:13,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:13,102 INFO L93 Difference]: Finished difference Result 343 states and 492 transitions. [2024-11-23 22:38:13,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:38:13,103 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 123 [2024-11-23 22:38:13,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:13,108 INFO L225 Difference]: With dead ends: 343 [2024-11-23 22:38:13,108 INFO L226 Difference]: Without dead ends: 276 [2024-11-23 22:38:13,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2024-11-23 22:38:13,110 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 476 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:13,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 528 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 22:38:13,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-23 22:38:13,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 187. [2024-11-23 22:38:13,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 128 states have (on average 1.296875) internal successors, (166), 129 states have internal predecessors, (166), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-23 22:38:13,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 274 transitions. [2024-11-23 22:38:13,146 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 274 transitions. Word has length 123 [2024-11-23 22:38:13,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:13,147 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 274 transitions. [2024-11-23 22:38:13,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:38:13,147 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 274 transitions. [2024-11-23 22:38:13,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 22:38:13,150 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:13,150 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:13,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 22:38:13,150 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:38:13,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:13,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1137097311, now seen corresponding path program 1 times [2024-11-23 22:38:13,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:38:13,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782455668] [2024-11-23 22:38:13,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:13,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:38:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:38:32,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:38:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782455668] [2024-11-23 22:38:32,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782455668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:38:32,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:38:32,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-23 22:38:32,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104197638] [2024-11-23 22:38:32,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:32,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 22:38:32,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:38:32,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 22:38:32,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-23 22:38:32,873 INFO L87 Difference]: Start difference. First operand 187 states and 274 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:38:36,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:36,068 INFO L93 Difference]: Finished difference Result 385 states and 538 transitions. [2024-11-23 22:38:36,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 22:38:36,069 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 123 [2024-11-23 22:38:36,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:36,072 INFO L225 Difference]: With dead ends: 385 [2024-11-23 22:38:36,072 INFO L226 Difference]: Without dead ends: 318 [2024-11-23 22:38:36,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2024-11-23 22:38:36,074 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 641 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:36,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 679 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 22:38:36,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-23 22:38:36,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 208. [2024-11-23 22:38:36,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 145 states have (on average 1.2758620689655173) internal successors, (185), 146 states have internal predecessors, (185), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-23 22:38:36,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 293 transitions. [2024-11-23 22:38:36,104 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 293 transitions. Word has length 123 [2024-11-23 22:38:36,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:36,105 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 293 transitions. [2024-11-23 22:38:36,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:38:36,105 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 293 transitions. [2024-11-23 22:38:36,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 22:38:36,107 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:36,107 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:36,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 22:38:36,108 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:38:36,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:36,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1395262749, now seen corresponding path program 1 times [2024-11-23 22:38:36,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:38:36,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798473285] [2024-11-23 22:38:36,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:36,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:38:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:56,822 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:38:56,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:38:56,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798473285] [2024-11-23 22:38:56,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798473285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:38:56,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:38:56,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 22:38:56,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231644409] [2024-11-23 22:38:56,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:56,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 22:38:56,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:38:56,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 22:38:56,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:38:56,825 INFO L87 Difference]: Start difference. First operand 208 states and 293 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:39:01,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:39:01,005 INFO L93 Difference]: Finished difference Result 487 states and 671 transitions. [2024-11-23 22:39:01,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 22:39:01,006 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 123 [2024-11-23 22:39:01,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:39:01,012 INFO L225 Difference]: With dead ends: 487 [2024-11-23 22:39:01,012 INFO L226 Difference]: Without dead ends: 420 [2024-11-23 22:39:01,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2024-11-23 22:39:01,015 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 726 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:39:01,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 647 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-23 22:39:01,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-11-23 22:39:01,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 208. [2024-11-23 22:39:01,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 145 states have (on average 1.2758620689655173) internal successors, (185), 146 states have internal predecessors, (185), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-23 22:39:01,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 293 transitions. [2024-11-23 22:39:01,062 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 293 transitions. Word has length 123 [2024-11-23 22:39:01,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:39:01,062 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 293 transitions. [2024-11-23 22:39:01,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:39:01,063 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 293 transitions. [2024-11-23 22:39:01,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 22:39:01,068 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:39:01,069 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:39:01,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 22:39:01,069 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:39:01,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:39:01,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1944212767, now seen corresponding path program 1 times [2024-11-23 22:39:01,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:39:01,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916036468] [2024-11-23 22:39:01,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:39:01,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:39:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:39:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:39:15,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:39:15,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916036468] [2024-11-23 22:39:15,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916036468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:39:15,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:39:15,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:39:15,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301565568] [2024-11-23 22:39:15,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:39:15,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:39:15,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:39:15,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:39:15,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:39:15,342 INFO L87 Difference]: Start difference. First operand 208 states and 293 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:39:16,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:39:16,483 INFO L93 Difference]: Finished difference Result 460 states and 642 transitions. [2024-11-23 22:39:16,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 22:39:16,484 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 123 [2024-11-23 22:39:16,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:39:16,487 INFO L225 Difference]: With dead ends: 460 [2024-11-23 22:39:16,487 INFO L226 Difference]: Without dead ends: 295 [2024-11-23 22:39:16,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2024-11-23 22:39:16,489 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 411 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:39:16,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 564 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 22:39:16,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-23 22:39:16,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 210. [2024-11-23 22:39:16,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 147 states have (on average 1.272108843537415) internal successors, (187), 148 states have internal predecessors, (187), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-23 22:39:16,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 295 transitions. [2024-11-23 22:39:16,520 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 295 transitions. Word has length 123 [2024-11-23 22:39:16,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:39:16,521 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 295 transitions. [2024-11-23 22:39:16,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:39:16,522 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 295 transitions. [2024-11-23 22:39:16,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 22:39:16,523 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:39:16,524 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:39:16,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 22:39:16,524 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:39:16,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:39:16,525 INFO L85 PathProgramCache]: Analyzing trace with hash 291078045, now seen corresponding path program 1 times [2024-11-23 22:39:16,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:39:16,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75581971] [2024-11-23 22:39:16,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:39:16,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:39:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:39:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:39:23,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:39:23,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75581971] [2024-11-23 22:39:23,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75581971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:39:23,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:39:23,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 22:39:23,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502387619] [2024-11-23 22:39:23,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:39:23,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 22:39:23,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:39:23,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 22:39:23,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:39:23,603 INFO L87 Difference]: Start difference. First operand 210 states and 295 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:39:25,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:39:25,275 INFO L93 Difference]: Finished difference Result 422 states and 595 transitions. [2024-11-23 22:39:25,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 22:39:25,276 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 123 [2024-11-23 22:39:25,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:39:25,279 INFO L225 Difference]: With dead ends: 422 [2024-11-23 22:39:25,279 INFO L226 Difference]: Without dead ends: 355 [2024-11-23 22:39:25,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2024-11-23 22:39:25,281 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 360 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:39:25,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 552 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 22:39:25,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-23 22:39:25,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 294. [2024-11-23 22:39:25,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 210 states have (on average 1.2857142857142858) internal successors, (270), 211 states have internal predecessors, (270), 72 states have call successors, (72), 11 states have call predecessors, (72), 11 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-23 22:39:25,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 414 transitions. [2024-11-23 22:39:25,316 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 414 transitions. Word has length 123 [2024-11-23 22:39:25,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:39:25,317 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 414 transitions. [2024-11-23 22:39:25,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:39:25,317 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 414 transitions. [2024-11-23 22:39:25,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 22:39:25,319 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:39:25,319 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:39:25,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 22:39:25,320 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:39:25,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:39:25,320 INFO L85 PathProgramCache]: Analyzing trace with hash 971136415, now seen corresponding path program 1 times [2024-11-23 22:39:25,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:39:25,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703944889] [2024-11-23 22:39:25,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:39:25,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:39:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:39:41,253 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:39:41,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:39:41,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703944889] [2024-11-23 22:39:41,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703944889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:39:41,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:39:41,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 22:39:41,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949718278] [2024-11-23 22:39:41,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:39:41,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 22:39:41,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:39:41,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 22:39:41,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:39:41,256 INFO L87 Difference]: Start difference. First operand 294 states and 414 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:39:43,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:39:43,461 INFO L93 Difference]: Finished difference Result 452 states and 632 transitions. [2024-11-23 22:39:43,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 22:39:43,462 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 123 [2024-11-23 22:39:43,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:39:43,465 INFO L225 Difference]: With dead ends: 452 [2024-11-23 22:39:43,465 INFO L226 Difference]: Without dead ends: 385 [2024-11-23 22:39:43,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2024-11-23 22:39:43,466 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 577 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:39:43,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 558 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 22:39:43,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-23 22:39:43,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 294. [2024-11-23 22:39:43,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 210 states have (on average 1.2857142857142858) internal successors, (270), 211 states have internal predecessors, (270), 72 states have call successors, (72), 11 states have call predecessors, (72), 11 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-23 22:39:43,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 414 transitions. [2024-11-23 22:39:43,495 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 414 transitions. Word has length 123 [2024-11-23 22:39:43,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:39:43,495 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 414 transitions. [2024-11-23 22:39:43,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:39:43,495 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 414 transitions. [2024-11-23 22:39:43,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 22:39:43,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:39:43,497 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:39:43,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 22:39:43,497 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:39:43,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:39:43,498 INFO L85 PathProgramCache]: Analyzing trace with hash -857047395, now seen corresponding path program 1 times [2024-11-23 22:39:43,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:39:43,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795514341] [2024-11-23 22:39:43,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:39:43,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:39:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:00,103 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:40:00,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:40:00,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795514341] [2024-11-23 22:40:00,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795514341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:40:00,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:40:00,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:40:00,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59017153] [2024-11-23 22:40:00,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:40:00,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:40:00,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:40:00,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:40:00,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:40:00,107 INFO L87 Difference]: Start difference. First operand 294 states and 414 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:40:01,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:40:01,926 INFO L93 Difference]: Finished difference Result 398 states and 560 transitions. [2024-11-23 22:40:01,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:40:01,927 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 123 [2024-11-23 22:40:01,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:40:01,930 INFO L225 Difference]: With dead ends: 398 [2024-11-23 22:40:01,930 INFO L226 Difference]: Without dead ends: 331 [2024-11-23 22:40:01,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2024-11-23 22:40:01,931 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 301 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:40:01,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 604 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 22:40:01,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-23 22:40:01,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 278. [2024-11-23 22:40:01,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 194 states have (on average 1.268041237113402) internal successors, (246), 195 states have internal predecessors, (246), 72 states have call successors, (72), 11 states have call predecessors, (72), 11 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-23 22:40:01,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 390 transitions. [2024-11-23 22:40:01,959 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 390 transitions. Word has length 123 [2024-11-23 22:40:01,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:40:01,959 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 390 transitions. [2024-11-23 22:40:01,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:40:01,960 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 390 transitions. [2024-11-23 22:40:01,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 22:40:01,961 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:40:01,961 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:40:01,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 22:40:01,962 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:40:01,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:40:01,962 INFO L85 PathProgramCache]: Analyzing trace with hash -49931939, now seen corresponding path program 1 times [2024-11-23 22:40:01,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:40:01,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300602236] [2024-11-23 22:40:01,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:01,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:40:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:40:15,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:40:15,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300602236] [2024-11-23 22:40:15,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300602236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:40:15,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:40:15,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:40:15,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001375749] [2024-11-23 22:40:15,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:40:15,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:40:15,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:40:15,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:40:15,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:40:15,476 INFO L87 Difference]: Start difference. First operand 278 states and 390 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:40:16,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:40:16,872 INFO L93 Difference]: Finished difference Result 483 states and 676 transitions. [2024-11-23 22:40:16,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:40:16,873 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 123 [2024-11-23 22:40:16,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:40:16,875 INFO L225 Difference]: With dead ends: 483 [2024-11-23 22:40:16,876 INFO L226 Difference]: Without dead ends: 327 [2024-11-23 22:40:16,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=274, Unknown=0, NotChecked=0, Total=420 [2024-11-23 22:40:16,877 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 259 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:40:16,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 601 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 22:40:16,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-11-23 22:40:16,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 280. [2024-11-23 22:40:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 196 states have (on average 1.2653061224489797) internal successors, (248), 197 states have internal predecessors, (248), 72 states have call successors, (72), 11 states have call predecessors, (72), 11 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-23 22:40:16,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 392 transitions. [2024-11-23 22:40:16,917 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 392 transitions. Word has length 123 [2024-11-23 22:40:16,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:40:16,920 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 392 transitions. [2024-11-23 22:40:16,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:40:16,920 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 392 transitions. [2024-11-23 22:40:16,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:40:16,922 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:40:16,922 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:40:16,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 22:40:16,922 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:40:16,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:40:16,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1627607207, now seen corresponding path program 1 times [2024-11-23 22:40:16,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:40:16,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684015461] [2024-11-23 22:40:16,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:16,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:40:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:34,281 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:40:34,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:40:34,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684015461] [2024-11-23 22:40:34,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684015461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:40:34,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:40:34,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-23 22:40:34,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964086395] [2024-11-23 22:40:34,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:40:34,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 22:40:34,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:40:34,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 22:40:34,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:40:34,283 INFO L87 Difference]: Start difference. First operand 280 states and 392 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:40:38,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:40:38,875 INFO L93 Difference]: Finished difference Result 526 states and 729 transitions. [2024-11-23 22:40:38,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 22:40:38,876 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 124 [2024-11-23 22:40:38,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:40:38,879 INFO L225 Difference]: With dead ends: 526 [2024-11-23 22:40:38,879 INFO L226 Difference]: Without dead ends: 459 [2024-11-23 22:40:38,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2024-11-23 22:40:38,881 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 703 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:40:38,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 657 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-23 22:40:38,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-23 22:40:38,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 291. [2024-11-23 22:40:38,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 207 states have (on average 1.285024154589372) internal successors, (266), 208 states have internal predecessors, (266), 72 states have call successors, (72), 11 states have call predecessors, (72), 11 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-23 22:40:38,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 410 transitions. [2024-11-23 22:40:38,910 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 410 transitions. Word has length 124 [2024-11-23 22:40:38,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:40:38,910 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 410 transitions. [2024-11-23 22:40:38,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:40:38,911 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 410 transitions. [2024-11-23 22:40:38,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:40:38,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:40:38,912 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:40:38,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 22:40:38,913 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:40:38,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:40:38,913 INFO L85 PathProgramCache]: Analyzing trace with hash 147400155, now seen corresponding path program 1 times [2024-11-23 22:40:38,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:40:38,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621357650] [2024-11-23 22:40:38,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:38,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:40:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:40:39,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:40:39,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621357650] [2024-11-23 22:40:39,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621357650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:40:39,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:40:39,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:40:39,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419933355] [2024-11-23 22:40:39,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:40:39,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:40:39,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:40:39,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:40:39,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:40:39,098 INFO L87 Difference]: Start difference. First operand 291 states and 410 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:40:39,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:40:39,191 INFO L93 Difference]: Finished difference Result 408 states and 572 transitions. [2024-11-23 22:40:39,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:40:39,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 124 [2024-11-23 22:40:39,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:40:39,195 INFO L225 Difference]: With dead ends: 408 [2024-11-23 22:40:39,195 INFO L226 Difference]: Without dead ends: 341 [2024-11-23 22:40:39,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:40:39,196 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 49 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:40:39,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 224 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:40:39,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-11-23 22:40:39,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 336. [2024-11-23 22:40:39,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 241 states have (on average 1.2697095435684647) internal successors, (306), 243 states have internal predecessors, (306), 80 states have call successors, (80), 14 states have call predecessors, (80), 14 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-23 22:40:39,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 466 transitions. [2024-11-23 22:40:39,223 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 466 transitions. Word has length 124 [2024-11-23 22:40:39,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:40:39,223 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 466 transitions. [2024-11-23 22:40:39,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:40:39,224 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 466 transitions. [2024-11-23 22:40:39,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:40:39,226 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:40:39,226 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:40:39,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 22:40:39,227 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:40:39,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:40:39,227 INFO L85 PathProgramCache]: Analyzing trace with hash -2020634217, now seen corresponding path program 1 times [2024-11-23 22:40:39,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:40:39,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24623137] [2024-11-23 22:40:39,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:39,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:40:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:42:05,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:05,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24623137] [2024-11-23 22:42:05,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24623137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:05,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:42:05,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-23 22:42:05,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667960835] [2024-11-23 22:42:05,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:05,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 22:42:05,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:05,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 22:42:05,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:42:05,829 INFO L87 Difference]: Start difference. First operand 336 states and 466 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:42:13,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:13,173 INFO L93 Difference]: Finished difference Result 680 states and 935 transitions. [2024-11-23 22:42:13,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-23 22:42:13,173 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 124 [2024-11-23 22:42:13,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:13,177 INFO L225 Difference]: With dead ends: 680 [2024-11-23 22:42:13,177 INFO L226 Difference]: Without dead ends: 580 [2024-11-23 22:42:13,179 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=278, Invalid=912, Unknown=0, NotChecked=0, Total=1190 [2024-11-23 22:42:13,179 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 1353 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:13,181 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 561 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-23 22:42:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-23 22:42:13,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 352. [2024-11-23 22:42:13,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 257 states have (on average 1.2879377431906616) internal successors, (331), 258 states have internal predecessors, (331), 80 states have call successors, (80), 14 states have call predecessors, (80), 14 states have return successors, (80), 79 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-23 22:42:13,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 491 transitions. [2024-11-23 22:42:13,211 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 491 transitions. Word has length 124 [2024-11-23 22:42:13,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:13,212 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 491 transitions. [2024-11-23 22:42:13,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:42:13,212 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 491 transitions. [2024-11-23 22:42:13,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:42:13,214 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:13,214 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:13,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 22:42:13,215 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:13,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:13,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1435209817, now seen corresponding path program 1 times [2024-11-23 22:42:13,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:13,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553260203] [2024-11-23 22:42:13,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:13,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:47:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:47:18,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:18,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553260203] [2024-11-23 22:47:18,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553260203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:18,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:18,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-23 22:47:18,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614208202] [2024-11-23 22:47:18,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:18,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 22:47:18,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:18,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 22:47:18,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:47:18,283 INFO L87 Difference]: Start difference. First operand 352 states and 491 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:47:35,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:47:35,893 INFO L93 Difference]: Finished difference Result 737 states and 1016 transitions. [2024-11-23 22:47:35,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-23 22:47:35,893 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 124 [2024-11-23 22:47:35,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:47:35,898 INFO L225 Difference]: With dead ends: 737 [2024-11-23 22:47:35,899 INFO L226 Difference]: Without dead ends: 637 [2024-11-23 22:47:35,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=383, Invalid=1257, Unknown=0, NotChecked=0, Total=1640 [2024-11-23 22:47:35,901 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 1191 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:47:35,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 721 Invalid, 1729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-23 22:47:35,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2024-11-23 22:47:35,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 366. [2024-11-23 22:47:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 271 states have (on average 1.3025830258302582) internal successors, (353), 272 states have internal predecessors, (353), 80 states have call successors, (80), 14 states have call predecessors, (80), 14 states have return successors, (80), 79 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-23 22:47:35,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 513 transitions. [2024-11-23 22:47:35,944 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 513 transitions. Word has length 124 [2024-11-23 22:47:35,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:47:35,945 INFO L471 AbstractCegarLoop]: Abstraction has 366 states and 513 transitions. [2024-11-23 22:47:35,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:47:35,945 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 513 transitions. [2024-11-23 22:47:35,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:47:35,947 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:47:35,948 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:35,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 22:47:35,948 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:47:35,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:35,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1084750117, now seen corresponding path program 1 times [2024-11-23 22:47:35,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:35,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923430969] [2024-11-23 22:47:35,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:47:35,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:47:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:47:36,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:36,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923430969] [2024-11-23 22:47:36,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923430969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:36,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:36,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:47:36,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909911956] [2024-11-23 22:47:36,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:36,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:47:36,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:36,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:47:36,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:47:36,129 INFO L87 Difference]: Start difference. First operand 366 states and 513 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:47:36,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:47:36,264 INFO L93 Difference]: Finished difference Result 813 states and 1136 transitions. [2024-11-23 22:47:36,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:47:36,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 124 [2024-11-23 22:47:36,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:47:36,267 INFO L225 Difference]: With dead ends: 813 [2024-11-23 22:47:36,267 INFO L226 Difference]: Without dead ends: 519 [2024-11-23 22:47:36,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:47:36,269 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 73 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:47:36,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 282 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:47:36,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2024-11-23 22:47:36,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 466. [2024-11-23 22:47:36,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 364 states have (on average 1.3104395604395604) internal successors, (477), 367 states have internal predecessors, (477), 84 states have call successors, (84), 17 states have call predecessors, (84), 17 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-23 22:47:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 645 transitions. [2024-11-23 22:47:36,314 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 645 transitions. Word has length 124 [2024-11-23 22:47:36,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:47:36,315 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 645 transitions. [2024-11-23 22:47:36,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:47:36,315 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 645 transitions. [2024-11-23 22:47:36,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:47:36,316 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:47:36,317 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:36,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 22:47:36,317 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:47:36,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:36,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2080554075, now seen corresponding path program 1 times [2024-11-23 22:47:36,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:36,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353345089] [2024-11-23 22:47:36,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:47:36,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:47:36,497 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:47:36,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:36,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353345089] [2024-11-23 22:47:36,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353345089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:36,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:36,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:47:36,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618095631] [2024-11-23 22:47:36,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:36,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:47:36,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:36,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:47:36,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:47:36,499 INFO L87 Difference]: Start difference. First operand 466 states and 645 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:47:36,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:47:36,623 INFO L93 Difference]: Finished difference Result 1069 states and 1468 transitions. [2024-11-23 22:47:36,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:47:36,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 124 [2024-11-23 22:47:36,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:47:36,629 INFO L225 Difference]: With dead ends: 1069 [2024-11-23 22:47:36,629 INFO L226 Difference]: Without dead ends: 676 [2024-11-23 22:47:36,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:47:36,632 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 39 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:47:36,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 351 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:47:36,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2024-11-23 22:47:36,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 664. [2024-11-23 22:47:36,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 534 states have (on average 1.2865168539325842) internal successors, (687), 543 states have internal predecessors, (687), 104 states have call successors, (104), 25 states have call predecessors, (104), 25 states have return successors, (104), 95 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-23 22:47:36,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 895 transitions. [2024-11-23 22:47:36,696 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 895 transitions. Word has length 124 [2024-11-23 22:47:36,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:47:36,697 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 895 transitions. [2024-11-23 22:47:36,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:47:36,697 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 895 transitions. [2024-11-23 22:47:36,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:47:36,699 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:47:36,699 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:36,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 22:47:36,700 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:47:36,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:36,700 INFO L85 PathProgramCache]: Analyzing trace with hash 685985177, now seen corresponding path program 1 times [2024-11-23 22:47:36,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:36,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46577935] [2024-11-23 22:47:36,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:47:36,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:48:09,530 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:48:09,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:09,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46577935] [2024-11-23 22:48:09,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46577935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:48:09,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:48:09,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:48:09,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782323237] [2024-11-23 22:48:09,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:48:09,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:48:09,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:09,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:48:09,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:48:09,532 INFO L87 Difference]: Start difference. First operand 664 states and 895 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:48:12,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:48:12,223 INFO L93 Difference]: Finished difference Result 1504 states and 2016 transitions. [2024-11-23 22:48:12,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 22:48:12,224 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 124 [2024-11-23 22:48:12,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:48:12,229 INFO L225 Difference]: With dead ends: 1504 [2024-11-23 22:48:12,229 INFO L226 Difference]: Without dead ends: 913 [2024-11-23 22:48:12,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2024-11-23 22:48:12,232 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 364 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:48:12,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 700 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 22:48:12,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2024-11-23 22:48:12,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 662. [2024-11-23 22:48:12,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 532 states have (on average 1.2857142857142858) internal successors, (684), 541 states have internal predecessors, (684), 104 states have call successors, (104), 25 states have call predecessors, (104), 25 states have return successors, (104), 95 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-23 22:48:12,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 892 transitions. [2024-11-23 22:48:12,300 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 892 transitions. Word has length 124 [2024-11-23 22:48:12,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:48:12,301 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 892 transitions. [2024-11-23 22:48:12,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:48:12,301 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 892 transitions. [2024-11-23 22:48:12,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:48:12,302 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:48:12,302 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:48:12,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 22:48:12,303 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:48:12,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:12,303 INFO L85 PathProgramCache]: Analyzing trace with hash 978416347, now seen corresponding path program 1 times [2024-11-23 22:48:12,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:12,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287987322] [2024-11-23 22:48:12,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:48:12,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:48:27,114 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:48:27,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:27,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287987322] [2024-11-23 22:48:27,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287987322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:48:27,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:48:27,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:48:27,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043092613] [2024-11-23 22:48:27,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:48:27,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:48:27,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:27,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:48:27,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:48:27,117 INFO L87 Difference]: Start difference. First operand 662 states and 892 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:48:28,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:48:28,981 INFO L93 Difference]: Finished difference Result 1397 states and 1868 transitions. [2024-11-23 22:48:28,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:48:28,982 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 124 [2024-11-23 22:48:28,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:48:28,987 INFO L225 Difference]: With dead ends: 1397 [2024-11-23 22:48:28,987 INFO L226 Difference]: Without dead ends: 1129 [2024-11-23 22:48:28,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:48:28,989 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 509 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:48:28,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 460 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 22:48:28,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2024-11-23 22:48:29,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 681. [2024-11-23 22:48:29,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 551 states have (on average 1.2921960072595282) internal successors, (712), 560 states have internal predecessors, (712), 104 states have call successors, (104), 25 states have call predecessors, (104), 25 states have return successors, (104), 95 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-23 22:48:29,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 920 transitions. [2024-11-23 22:48:29,065 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 920 transitions. Word has length 124 [2024-11-23 22:48:29,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:48:29,066 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 920 transitions. [2024-11-23 22:48:29,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:48:29,066 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 920 transitions. [2024-11-23 22:48:29,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:48:29,067 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:48:29,068 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:48:29,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 22:48:29,068 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:48:29,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:29,069 INFO L85 PathProgramCache]: Analyzing trace with hash 585389337, now seen corresponding path program 1 times [2024-11-23 22:48:29,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:29,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415588501] [2024-11-23 22:48:29,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:48:29,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:48:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:48:45,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:45,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415588501] [2024-11-23 22:48:45,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415588501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:48:45,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:48:45,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 22:48:45,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721031229] [2024-11-23 22:48:45,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:48:45,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 22:48:45,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:45,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 22:48:45,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:48:45,791 INFO L87 Difference]: Start difference. First operand 681 states and 920 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:48:49,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:48:49,158 INFO L93 Difference]: Finished difference Result 1282 states and 1718 transitions. [2024-11-23 22:48:49,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 22:48:49,159 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 124 [2024-11-23 22:48:49,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:48:49,165 INFO L225 Difference]: With dead ends: 1282 [2024-11-23 22:48:49,165 INFO L226 Difference]: Without dead ends: 1014 [2024-11-23 22:48:49,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=201, Invalid=669, Unknown=0, NotChecked=0, Total=870 [2024-11-23 22:48:49,167 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 418 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:48:49,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 553 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 22:48:49,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2024-11-23 22:48:49,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 684. [2024-11-23 22:48:49,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 554 states have (on average 1.2942238267148014) internal successors, (717), 563 states have internal predecessors, (717), 104 states have call successors, (104), 25 states have call predecessors, (104), 25 states have return successors, (104), 95 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-23 22:48:49,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 925 transitions. [2024-11-23 22:48:49,253 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 925 transitions. Word has length 124 [2024-11-23 22:48:49,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:48:49,253 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 925 transitions. [2024-11-23 22:48:49,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:48:49,254 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 925 transitions. [2024-11-23 22:48:49,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:48:49,256 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:48:49,256 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:48:49,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 22:48:49,256 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:48:49,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:49,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1934570597, now seen corresponding path program 1 times [2024-11-23 22:48:49,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:49,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168455209] [2024-11-23 22:48:49,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:48:49,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:49:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:49:01,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:49:01,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168455209] [2024-11-23 22:49:01,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168455209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:49:01,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:49:01,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:49:01,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672607407] [2024-11-23 22:49:01,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:49:01,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:49:01,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:49:01,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:49:01,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:49:01,476 INFO L87 Difference]: Start difference. First operand 684 states and 925 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:49:02,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:49:02,811 INFO L93 Difference]: Finished difference Result 1185 states and 1595 transitions. [2024-11-23 22:49:02,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:49:02,812 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 124 [2024-11-23 22:49:02,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:49:02,817 INFO L225 Difference]: With dead ends: 1185 [2024-11-23 22:49:02,817 INFO L226 Difference]: Without dead ends: 917 [2024-11-23 22:49:02,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:49:02,819 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 278 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:49:02,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 510 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 22:49:02,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2024-11-23 22:49:02,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 687. [2024-11-23 22:49:02,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 557 states have (on average 1.296229802513465) internal successors, (722), 566 states have internal predecessors, (722), 104 states have call successors, (104), 25 states have call predecessors, (104), 25 states have return successors, (104), 95 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-23 22:49:02,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 930 transitions. [2024-11-23 22:49:02,902 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 930 transitions. Word has length 124 [2024-11-23 22:49:02,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:49:02,903 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 930 transitions. [2024-11-23 22:49:02,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:49:02,903 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 930 transitions. [2024-11-23 22:49:02,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:49:02,905 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:49:02,905 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:49:02,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 22:49:02,905 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:49:02,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:49:02,906 INFO L85 PathProgramCache]: Analyzing trace with hash -253733925, now seen corresponding path program 1 times [2024-11-23 22:49:02,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:49:02,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327294921] [2024-11-23 22:49:02,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:49:02,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:49:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:49:40,822 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:49:40,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:49:40,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327294921] [2024-11-23 22:49:40,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327294921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:49:40,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:49:40,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 22:49:40,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424516389] [2024-11-23 22:49:40,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:49:40,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 22:49:40,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:49:40,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 22:49:40,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:49:40,824 INFO L87 Difference]: Start difference. First operand 687 states and 930 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:49:44,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:49:44,040 INFO L93 Difference]: Finished difference Result 1129 states and 1524 transitions. [2024-11-23 22:49:44,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 22:49:44,041 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 124 [2024-11-23 22:49:44,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:49:44,046 INFO L225 Difference]: With dead ends: 1129 [2024-11-23 22:49:44,046 INFO L226 Difference]: Without dead ends: 861 [2024-11-23 22:49:44,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2024-11-23 22:49:44,049 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 297 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:49:44,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 612 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 22:49:44,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2024-11-23 22:49:44,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 631. [2024-11-23 22:49:44,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 501 states have (on average 1.2694610778443114) internal successors, (636), 511 states have internal predecessors, (636), 104 states have call successors, (104), 25 states have call predecessors, (104), 25 states have return successors, (104), 94 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-23 22:49:44,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 844 transitions. [2024-11-23 22:49:44,144 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 844 transitions. Word has length 124 [2024-11-23 22:49:44,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:49:44,145 INFO L471 AbstractCegarLoop]: Abstraction has 631 states and 844 transitions. [2024-11-23 22:49:44,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:49:44,145 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 844 transitions. [2024-11-23 22:49:44,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:49:44,146 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:49:44,147 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:49:44,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 22:49:44,147 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:49:44,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:49:44,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1521273437, now seen corresponding path program 1 times [2024-11-23 22:49:44,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:49:44,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283683134] [2024-11-23 22:49:44,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:49:44,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:49:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:49:46,884 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:49:46,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:49:46,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283683134] [2024-11-23 22:49:46,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283683134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:49:46,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:49:46,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 22:49:46,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255411373] [2024-11-23 22:49:46,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:49:46,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 22:49:46,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:49:46,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 22:49:46,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:49:46,887 INFO L87 Difference]: Start difference. First operand 631 states and 844 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:49:51,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:49:51,048 INFO L93 Difference]: Finished difference Result 1376 states and 1852 transitions. [2024-11-23 22:49:51,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 22:49:51,049 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 124 [2024-11-23 22:49:51,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:49:51,057 INFO L225 Difference]: With dead ends: 1376 [2024-11-23 22:49:51,058 INFO L226 Difference]: Without dead ends: 1108 [2024-11-23 22:49:51,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-23 22:49:51,061 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 631 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:49:51,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 677 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-23 22:49:51,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2024-11-23 22:49:51,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 594. [2024-11-23 22:49:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 481 states have (on average 1.2848232848232848) internal successors, (618), 489 states have internal predecessors, (618), 88 states have call successors, (88), 24 states have call predecessors, (88), 24 states have return successors, (88), 80 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-23 22:49:51,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 794 transitions. [2024-11-23 22:49:51,152 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 794 transitions. Word has length 124 [2024-11-23 22:49:51,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:49:51,153 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 794 transitions. [2024-11-23 22:49:51,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:49:51,153 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 794 transitions. [2024-11-23 22:49:51,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:49:51,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:49:51,155 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:49:51,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 22:49:51,155 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:49:51,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:49:51,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1002958565, now seen corresponding path program 1 times [2024-11-23 22:49:51,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:49:51,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092447960] [2024-11-23 22:49:51,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:49:51,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:49:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:50:07,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:07,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092447960] [2024-11-23 22:50:07,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092447960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:07,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:07,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 22:50:07,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130892075] [2024-11-23 22:50:07,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:07,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 22:50:07,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:07,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 22:50:07,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:50:07,868 INFO L87 Difference]: Start difference. First operand 594 states and 794 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:50:09,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:09,231 INFO L93 Difference]: Finished difference Result 1198 states and 1604 transitions. [2024-11-23 22:50:09,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:50:09,232 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 124 [2024-11-23 22:50:09,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:09,236 INFO L225 Difference]: With dead ends: 1198 [2024-11-23 22:50:09,236 INFO L226 Difference]: Without dead ends: 726 [2024-11-23 22:50:09,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2024-11-23 22:50:09,238 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 189 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:09,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 533 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 22:50:09,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-11-23 22:50:09,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 505. [2024-11-23 22:50:09,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 415 states have (on average 1.2963855421686747) internal successors, (538), 423 states have internal predecessors, (538), 70 states have call successors, (70), 19 states have call predecessors, (70), 19 states have return successors, (70), 62 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-23 22:50:09,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 678 transitions. [2024-11-23 22:50:09,317 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 678 transitions. Word has length 124 [2024-11-23 22:50:09,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:09,317 INFO L471 AbstractCegarLoop]: Abstraction has 505 states and 678 transitions. [2024-11-23 22:50:09,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:50:09,318 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 678 transitions. [2024-11-23 22:50:09,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 22:50:09,319 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:09,319 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:50:09,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 22:50:09,320 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:09,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:09,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1005825276, now seen corresponding path program 1 times [2024-11-23 22:50:09,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:09,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594312701] [2024-11-23 22:50:09,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:09,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:23,890 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:50:23,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:23,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594312701] [2024-11-23 22:50:23,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594312701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:23,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:23,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 22:50:23,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482092817] [2024-11-23 22:50:23,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:23,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 22:50:23,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:23,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 22:50:23,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:50:23,892 INFO L87 Difference]: Start difference. First operand 505 states and 678 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:50:26,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:26,180 INFO L93 Difference]: Finished difference Result 909 states and 1222 transitions. [2024-11-23 22:50:26,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:50:26,181 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 125 [2024-11-23 22:50:26,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:26,184 INFO L225 Difference]: With dead ends: 909 [2024-11-23 22:50:26,185 INFO L226 Difference]: Without dead ends: 623 [2024-11-23 22:50:26,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2024-11-23 22:50:26,186 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 405 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:26,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 514 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-23 22:50:26,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2024-11-23 22:50:26,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 502. [2024-11-23 22:50:26,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 412 states have (on average 1.2936893203883495) internal successors, (533), 420 states have internal predecessors, (533), 70 states have call successors, (70), 19 states have call predecessors, (70), 19 states have return successors, (70), 62 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-23 22:50:26,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 673 transitions. [2024-11-23 22:50:26,260 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 673 transitions. Word has length 125 [2024-11-23 22:50:26,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:26,261 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 673 transitions. [2024-11-23 22:50:26,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:50:26,261 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 673 transitions. [2024-11-23 22:50:26,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-23 22:50:26,262 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:26,263 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:50:26,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 22:50:26,263 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:26,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:26,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1205148972, now seen corresponding path program 1 times [2024-11-23 22:50:26,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:26,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487618323] [2024-11-23 22:50:26,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:26,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:50:30,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:30,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487618323] [2024-11-23 22:50:30,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487618323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:30,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:30,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-23 22:50:30,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124714847] [2024-11-23 22:50:30,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:30,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 22:50:30,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:30,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 22:50:30,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-23 22:50:30,900 INFO L87 Difference]: Start difference. First operand 502 states and 673 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:50:34,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:34,016 INFO L93 Difference]: Finished difference Result 901 states and 1187 transitions. [2024-11-23 22:50:34,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-23 22:50:34,017 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 126 [2024-11-23 22:50:34,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:34,020 INFO L225 Difference]: With dead ends: 901 [2024-11-23 22:50:34,020 INFO L226 Difference]: Without dead ends: 899 [2024-11-23 22:50:34,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2024-11-23 22:50:34,021 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 411 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:34,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 710 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 22:50:34,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2024-11-23 22:50:34,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 547. [2024-11-23 22:50:34,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 447 states have (on average 1.2930648769574944) internal successors, (578), 454 states have internal predecessors, (578), 78 states have call successors, (78), 21 states have call predecessors, (78), 21 states have return successors, (78), 71 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-23 22:50:34,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 734 transitions. [2024-11-23 22:50:34,110 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 734 transitions. Word has length 126 [2024-11-23 22:50:34,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:34,110 INFO L471 AbstractCegarLoop]: Abstraction has 547 states and 734 transitions. [2024-11-23 22:50:34,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:50:34,111 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 734 transitions. [2024-11-23 22:50:34,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-23 22:50:34,112 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:34,112 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:50:34,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 22:50:34,113 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:34,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:34,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1463314410, now seen corresponding path program 1 times [2024-11-23 22:50:34,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:34,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972261670] [2024-11-23 22:50:34,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:34,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat