./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-81.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_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/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_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/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_29a5284c-df5f-4f2b-9e45-de03b50ec753/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 c37c06019a2f7252c23194b0baf4adc5534d367e32a3abf21b53b0028081fdaa --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:43:02,284 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:43:02,342 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:43:02,351 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:43:02,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:43:02,397 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:43:02,399 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:43:02,399 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:43:02,400 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:43:02,400 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:43:02,401 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:43:02,402 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:43:02,402 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:43:02,402 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:43:02,402 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:43:02,403 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:43:02,403 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:43:02,403 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:43:02,403 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:43:02,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:43:02,403 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:43:02,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:43:02,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:43:02,404 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:43:02,404 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:43:02,404 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:43:02,405 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:43:02,405 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:43:02,405 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:43:02,405 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:43:02,405 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:43:02,405 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:43:02,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:43:02,406 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:43:02,406 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:43:02,407 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:43:02,407 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:43:02,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:43:02,407 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:43:02,407 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:43:02,407 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:43:02,407 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:43:02,408 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:43:02,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:43:02,408 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:43:02,408 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:43:02,408 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:43:02,408 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:43:02,408 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_29a5284c-df5f-4f2b-9e45-de03b50ec753/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 -> c37c06019a2f7252c23194b0baf4adc5534d367e32a3abf21b53b0028081fdaa [2024-11-24 00:43:02,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:43:02,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:43:02,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:43:02,732 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:43:02,733 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:43:02,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-81.i [2024-11-24 00:43:05,759 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/data/819af976c/7bd59719616a4badacaee6cd8c0b0a45/FLAG58657c182 [2024-11-24 00:43:06,145 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:43:06,146 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-81.i [2024-11-24 00:43:06,162 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/data/819af976c/7bd59719616a4badacaee6cd8c0b0a45/FLAG58657c182 [2024-11-24 00:43:06,181 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/data/819af976c/7bd59719616a4badacaee6cd8c0b0a45 [2024-11-24 00:43:06,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:43:06,186 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:43:06,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:43:06,188 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:43:06,195 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:43:06,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:43:06" (1/1) ... [2024-11-24 00:43:06,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68d04b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:06, skipping insertion in model container [2024-11-24 00:43:06,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:43:06" (1/1) ... [2024-11-24 00:43:06,234 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:43:06,413 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_29a5284c-df5f-4f2b-9e45-de03b50ec753/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-81.i[919,932] [2024-11-24 00:43:06,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:43:06,576 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:43:06,589 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_29a5284c-df5f-4f2b-9e45-de03b50ec753/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-81.i[919,932] [2024-11-24 00:43:06,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:43:06,674 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:43:06,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:06 WrapperNode [2024-11-24 00:43:06,676 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:43:06,678 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:43:06,678 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:43:06,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:43:06,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:06" (1/1) ... [2024-11-24 00:43:06,706 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:06" (1/1) ... [2024-11-24 00:43:06,771 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 307 [2024-11-24 00:43:06,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:43:06,776 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:43:06,776 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:43:06,776 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:43:06,793 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:06" (1/1) ... [2024-11-24 00:43:06,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:06" (1/1) ... [2024-11-24 00:43:06,797 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:06" (1/1) ... [2024-11-24 00:43:06,836 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]. [2024-11-24 00:43:06,837 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:06" (1/1) ... [2024-11-24 00:43:06,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:06" (1/1) ... [2024-11-24 00:43:06,852 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:06" (1/1) ... [2024-11-24 00:43:06,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:06" (1/1) ... [2024-11-24 00:43:06,858 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:06" (1/1) ... [2024-11-24 00:43:06,861 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:06" (1/1) ... [2024-11-24 00:43:06,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:06" (1/1) ... [2024-11-24 00:43:06,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:43:06,869 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:43:06,869 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:43:06,869 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:43:06,870 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:06" (1/1) ... [2024-11-24 00:43:06,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:43:06,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:43:06,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:43:06,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:43:06,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:43:06,933 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:43:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:43:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:43:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:43:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:43:07,053 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:43:07,056 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:43:07,773 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-24 00:43:07,773 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:43:07,788 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:43:07,788 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:43:07,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:43:07 BoogieIcfgContainer [2024-11-24 00:43:07,788 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:43:07,790 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:43:07,790 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:43:07,798 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:43:07,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:43:06" (1/3) ... [2024-11-24 00:43:07,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ad4e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:43:07, skipping insertion in model container [2024-11-24 00:43:07,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:06" (2/3) ... [2024-11-24 00:43:07,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ad4e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:43:07, skipping insertion in model container [2024-11-24 00:43:07,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:43:07" (3/3) ... [2024-11-24 00:43:07,802 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-81.i [2024-11-24 00:43:07,819 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:43:07,820 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-81.i that has 2 procedures, 134 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:43:07,878 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:43:07,890 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;@21c9a3d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:43:07,890 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:43:07,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 81 states have (on average 1.4197530864197532) internal successors, (115), 82 states have internal predecessors, (115), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-24 00:43:07,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-24 00:43:07,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:07,913 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:43:07,913 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:07,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:07,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1628914907, now seen corresponding path program 1 times [2024-11-24 00:43:07,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:43:07,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786549004] [2024-11-24 00:43:07,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:07,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:43:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:08,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2024-11-24 00:43:08,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:43:08,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786549004] [2024-11-24 00:43:08,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786549004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:43:08,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657162463] [2024-11-24 00:43:08,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:08,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:43:08,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:43:08,490 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:43:08,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:43:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:08,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:43:08,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:43:08,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2024-11-24 00:43:08,931 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:43:08,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657162463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:43:08,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:43:08,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 00:43:08,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130988022] [2024-11-24 00:43:08,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:43:08,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:43:08,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:43:08,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:43:08,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:43:08,970 INFO L87 Difference]: Start difference. First operand has 134 states, 81 states have (on average 1.4197530864197532) internal successors, (115), 82 states have internal predecessors, (115), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-24 00:43:09,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:43:09,029 INFO L93 Difference]: Finished difference Result 261 states and 474 transitions. [2024-11-24 00:43:09,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:43:09,031 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) Word has length 306 [2024-11-24 00:43:09,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:43:09,041 INFO L225 Difference]: With dead ends: 261 [2024-11-24 00:43:09,041 INFO L226 Difference]: Without dead ends: 130 [2024-11-24 00:43:09,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:43:09,051 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:43:09,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:43:09,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-24 00:43:09,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-11-24 00:43:09,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 78 states have (on average 1.3846153846153846) internal successors, (108), 78 states have internal predecessors, (108), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-24 00:43:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 208 transitions. [2024-11-24 00:43:09,133 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 208 transitions. Word has length 306 [2024-11-24 00:43:09,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:43:09,134 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 208 transitions. [2024-11-24 00:43:09,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-24 00:43:09,135 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 208 transitions. [2024-11-24 00:43:09,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-24 00:43:09,142 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:09,143 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:43:09,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:43:09,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 00:43:09,348 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:09,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:09,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1800754029, now seen corresponding path program 1 times [2024-11-24 00:43:09,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:43:09,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504650838] [2024-11-24 00:43:09,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:09,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:43:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:10,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:43:10,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:43:10,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504650838] [2024-11-24 00:43:10,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504650838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:43:10,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:43:10,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:43:10,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502686249] [2024-11-24 00:43:10,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:43:10,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:43:10,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:43:10,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:43:10,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:43:10,820 INFO L87 Difference]: Start difference. First operand 130 states and 208 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:43:11,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:43:11,225 INFO L93 Difference]: Finished difference Result 385 states and 620 transitions. [2024-11-24 00:43:11,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:43:11,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 306 [2024-11-24 00:43:11,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:43:11,233 INFO L225 Difference]: With dead ends: 385 [2024-11-24 00:43:11,234 INFO L226 Difference]: Without dead ends: 258 [2024-11-24 00:43:11,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:43:11,236 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 114 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:43:11,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 501 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:43:11,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-24 00:43:11,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2024-11-24 00:43:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 153 states have (on average 1.392156862745098) internal successors, (213), 153 states have internal predecessors, (213), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-24 00:43:11,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 413 transitions. [2024-11-24 00:43:11,341 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 413 transitions. Word has length 306 [2024-11-24 00:43:11,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:43:11,343 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 413 transitions. [2024-11-24 00:43:11,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:43:11,343 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 413 transitions. [2024-11-24 00:43:11,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-24 00:43:11,348 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:11,349 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:43:11,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:43:11,349 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:11,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:11,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1275684225, now seen corresponding path program 1 times [2024-11-24 00:43:11,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:43:11,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522082578] [2024-11-24 00:43:11,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:11,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:43:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:13,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:43:13,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:43:13,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522082578] [2024-11-24 00:43:13,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522082578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:43:13,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:43:13,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:43:13,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660906157] [2024-11-24 00:43:13,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:43:13,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:43:13,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:43:13,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:43:13,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:43:13,121 INFO L87 Difference]: Start difference. First operand 256 states and 413 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-24 00:43:15,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:43:15,144 INFO L93 Difference]: Finished difference Result 1212 states and 1917 transitions. [2024-11-24 00:43:15,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:43:15,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 307 [2024-11-24 00:43:15,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:43:15,154 INFO L225 Difference]: With dead ends: 1212 [2024-11-24 00:43:15,154 INFO L226 Difference]: Without dead ends: 959 [2024-11-24 00:43:15,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:43:15,157 INFO L435 NwaCegarLoop]: 374 mSDtfsCounter, 817 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:43:15,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 809 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 00:43:15,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2024-11-24 00:43:15,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 949. [2024-11-24 00:43:15,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 572 states have (on average 1.3706293706293706) internal successors, (784), 576 states have internal predecessors, (784), 356 states have call successors, (356), 20 states have call predecessors, (356), 20 states have return successors, (356), 352 states have call predecessors, (356), 356 states have call successors, (356) [2024-11-24 00:43:15,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1496 transitions. [2024-11-24 00:43:15,490 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1496 transitions. Word has length 307 [2024-11-24 00:43:15,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:43:15,492 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1496 transitions. [2024-11-24 00:43:15,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-24 00:43:15,493 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1496 transitions. [2024-11-24 00:43:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-24 00:43:15,499 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:15,499 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:43:15,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:43:15,500 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:15,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:15,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1533849663, now seen corresponding path program 1 times [2024-11-24 00:43:15,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:43:15,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940383347] [2024-11-24 00:43:15,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:15,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:43:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:43:16,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:43:16,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940383347] [2024-11-24 00:43:16,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940383347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:43:16,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:43:16,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:43:16,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267716810] [2024-11-24 00:43:16,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:43:16,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:43:16,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:43:16,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:43:16,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:43:16,023 INFO L87 Difference]: Start difference. First operand 949 states and 1496 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:43:16,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:43:16,331 INFO L93 Difference]: Finished difference Result 2297 states and 3618 transitions. [2024-11-24 00:43:16,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:43:16,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 307 [2024-11-24 00:43:16,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:43:16,344 INFO L225 Difference]: With dead ends: 2297 [2024-11-24 00:43:16,344 INFO L226 Difference]: Without dead ends: 1351 [2024-11-24 00:43:16,347 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 [2024-11-24 00:43:16,348 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 72 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:43:16,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 615 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:43:16,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2024-11-24 00:43:16,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1341. [2024-11-24 00:43:16,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 924 states have (on average 1.432900432900433) internal successors, (1324), 936 states have internal predecessors, (1324), 388 states have call successors, (388), 28 states have call predecessors, (388), 28 states have return successors, (388), 376 states have call predecessors, (388), 388 states have call successors, (388) [2024-11-24 00:43:16,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 2100 transitions. [2024-11-24 00:43:16,611 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 2100 transitions. Word has length 307 [2024-11-24 00:43:16,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:43:16,611 INFO L471 AbstractCegarLoop]: Abstraction has 1341 states and 2100 transitions. [2024-11-24 00:43:16,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:43:16,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 2100 transitions. [2024-11-24 00:43:16,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-24 00:43:16,617 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:16,617 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:43:16,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:43:16,618 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:16,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:16,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1481253955, now seen corresponding path program 1 times [2024-11-24 00:43:16,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:43:16,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712496961] [2024-11-24 00:43:16,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:16,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:43:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:43:36,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:43:36,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712496961] [2024-11-24 00:43:36,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712496961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:43:36,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:43:36,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-24 00:43:36,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103183319] [2024-11-24 00:43:36,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:43:36,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:43:36,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:43:36,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:43:36,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:43:36,186 INFO L87 Difference]: Start difference. First operand 1341 states and 2100 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-24 00:43:39,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:43:39,296 INFO L93 Difference]: Finished difference Result 3810 states and 5933 transitions. [2024-11-24 00:43:39,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 00:43:39,297 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) Word has length 307 [2024-11-24 00:43:39,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:43:39,312 INFO L225 Difference]: With dead ends: 3810 [2024-11-24 00:43:39,312 INFO L226 Difference]: Without dead ends: 2472 [2024-11-24 00:43:39,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2024-11-24 00:43:39,318 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 1087 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:43:39,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1320 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-24 00:43:39,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2024-11-24 00:43:39,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1564. [2024-11-24 00:43:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1093 states have (on average 1.4364135407136323) internal successors, (1570), 1105 states have internal predecessors, (1570), 438 states have call successors, (438), 32 states have call predecessors, (438), 32 states have return successors, (438), 426 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-24 00:43:39,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2446 transitions. [2024-11-24 00:43:39,546 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2446 transitions. Word has length 307 [2024-11-24 00:43:39,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:43:39,547 INFO L471 AbstractCegarLoop]: Abstraction has 1564 states and 2446 transitions. [2024-11-24 00:43:39,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-24 00:43:39,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2446 transitions. [2024-11-24 00:43:39,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-24 00:43:39,556 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:39,556 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:43:39,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:43:39,557 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:39,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:39,558 INFO L85 PathProgramCache]: Analyzing trace with hash 819568635, now seen corresponding path program 1 times [2024-11-24 00:43:39,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:43:39,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49797008] [2024-11-24 00:43:39,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:39,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:43:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:43:51,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:43:51,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49797008] [2024-11-24 00:43:51,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49797008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:43:51,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:43:51,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 00:43:51,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725364893] [2024-11-24 00:43:51,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:43:51,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 00:43:51,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:43:51,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 00:43:51,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:43:51,047 INFO L87 Difference]: Start difference. First operand 1564 states and 2446 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:43:55,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:43:55,629 INFO L93 Difference]: Finished difference Result 3754 states and 5854 transitions. [2024-11-24 00:43:55,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:43:55,630 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 307 [2024-11-24 00:43:55,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:43:55,645 INFO L225 Difference]: With dead ends: 3754 [2024-11-24 00:43:55,646 INFO L226 Difference]: Without dead ends: 2416 [2024-11-24 00:43:55,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2024-11-24 00:43:55,652 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 828 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:43:55,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1124 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-24 00:43:55,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2024-11-24 00:43:55,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 1564. [2024-11-24 00:43:55,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1093 states have (on average 1.4364135407136323) internal successors, (1570), 1105 states have internal predecessors, (1570), 438 states have call successors, (438), 32 states have call predecessors, (438), 32 states have return successors, (438), 426 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-24 00:43:55,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2446 transitions. [2024-11-24 00:43:55,864 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2446 transitions. Word has length 307 [2024-11-24 00:43:55,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:43:55,865 INFO L471 AbstractCegarLoop]: Abstraction has 1564 states and 2446 transitions. [2024-11-24 00:43:55,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:43:55,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2446 transitions. [2024-11-24 00:43:55,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-24 00:43:55,871 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:55,871 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:43:55,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:43:55,872 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:55,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:55,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1124769599, now seen corresponding path program 1 times [2024-11-24 00:43:55,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:43:55,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036286039] [2024-11-24 00:43:55,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:55,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:43:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:56,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:43:56,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:43:56,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036286039] [2024-11-24 00:43:56,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036286039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:43:56,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:43:56,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:43:56,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931916885] [2024-11-24 00:43:56,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:43:56,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:43:56,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:43:56,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:43:56,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:43:56,720 INFO L87 Difference]: Start difference. First operand 1564 states and 2446 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:43:57,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:43:57,520 INFO L93 Difference]: Finished difference Result 3260 states and 5105 transitions. [2024-11-24 00:43:57,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:43:57,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 307 [2024-11-24 00:43:57,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:43:57,528 INFO L225 Difference]: With dead ends: 3260 [2024-11-24 00:43:57,528 INFO L226 Difference]: Without dead ends: 1922 [2024-11-24 00:43:57,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:43:57,533 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 192 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:43:57,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 877 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:43:57,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2024-11-24 00:43:57,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1584. [2024-11-24 00:43:57,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1113 states have (on average 1.4366576819407009) internal successors, (1599), 1125 states have internal predecessors, (1599), 438 states have call successors, (438), 32 states have call predecessors, (438), 32 states have return successors, (438), 426 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-24 00:43:57,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2475 transitions. [2024-11-24 00:43:57,727 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2475 transitions. Word has length 307 [2024-11-24 00:43:57,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:43:57,729 INFO L471 AbstractCegarLoop]: Abstraction has 1584 states and 2475 transitions. [2024-11-24 00:43:57,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:43:57,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2475 transitions. [2024-11-24 00:43:57,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-24 00:43:57,734 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:57,734 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:43:57,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:43:57,735 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:57,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:57,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1262399237, now seen corresponding path program 1 times [2024-11-24 00:43:57,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:43:57,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111794094] [2024-11-24 00:43:57,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:57,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:43:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:44:08,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:08,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111794094] [2024-11-24 00:44:08,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111794094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:08,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:08,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 00:44:08,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995062830] [2024-11-24 00:44:08,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:08,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:44:08,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:08,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:44:08,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:44:08,656 INFO L87 Difference]: Start difference. First operand 1584 states and 2475 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:44:10,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:10,990 INFO L93 Difference]: Finished difference Result 3772 states and 5887 transitions. [2024-11-24 00:44:10,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:44:10,991 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 307 [2024-11-24 00:44:10,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:11,004 INFO L225 Difference]: With dead ends: 3772 [2024-11-24 00:44:11,004 INFO L226 Difference]: Without dead ends: 2434 [2024-11-24 00:44:11,008 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:44:11,009 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 486 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:11,009 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 842 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:44:11,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2024-11-24 00:44:11,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 1660. [2024-11-24 00:44:11,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1660 states, 1189 states have (on average 1.4524810765349032) internal successors, (1727), 1201 states have internal predecessors, (1727), 438 states have call successors, (438), 32 states have call predecessors, (438), 32 states have return successors, (438), 426 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-24 00:44:11,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2603 transitions. [2024-11-24 00:44:11,198 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2603 transitions. Word has length 307 [2024-11-24 00:44:11,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:11,199 INFO L471 AbstractCegarLoop]: Abstraction has 1660 states and 2603 transitions. [2024-11-24 00:44:11,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:44:11,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2603 transitions. [2024-11-24 00:44:11,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-24 00:44:11,203 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:11,204 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:44:11,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:44:11,205 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:11,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:11,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1038423353, now seen corresponding path program 1 times [2024-11-24 00:44:11,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:11,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269768053] [2024-11-24 00:44:11,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:11,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:44:21,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:21,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269768053] [2024-11-24 00:44:21,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269768053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:21,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:21,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 00:44:21,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344416697] [2024-11-24 00:44:21,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:21,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:44:21,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:21,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:44:21,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:44:21,973 INFO L87 Difference]: Start difference. First operand 1660 states and 2603 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:44:24,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:24,027 INFO L93 Difference]: Finished difference Result 3662 states and 5734 transitions. [2024-11-24 00:44:24,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:44:24,028 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 307 [2024-11-24 00:44:24,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:24,041 INFO L225 Difference]: With dead ends: 3662 [2024-11-24 00:44:24,041 INFO L226 Difference]: Without dead ends: 2136 [2024-11-24 00:44:24,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:44:24,047 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 291 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:24,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 821 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:44:24,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2024-11-24 00:44:24,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 1652. [2024-11-24 00:44:24,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 1181 states have (on average 1.4521591871295512) internal successors, (1715), 1193 states have internal predecessors, (1715), 438 states have call successors, (438), 32 states have call predecessors, (438), 32 states have return successors, (438), 426 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-24 00:44:24,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2591 transitions. [2024-11-24 00:44:24,243 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 2591 transitions. Word has length 307 [2024-11-24 00:44:24,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:24,244 INFO L471 AbstractCegarLoop]: Abstraction has 1652 states and 2591 transitions. [2024-11-24 00:44:24,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:44:24,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 2591 transitions. [2024-11-24 00:44:24,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-24 00:44:24,248 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:24,248 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:44:24,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:44:24,248 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:24,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:24,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1863157820, now seen corresponding path program 1 times [2024-11-24 00:44:24,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:24,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481907908] [2024-11-24 00:44:24,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:24,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:30,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:44:30,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:30,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481907908] [2024-11-24 00:44:30,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481907908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:30,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:30,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 00:44:30,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442279824] [2024-11-24 00:44:30,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:30,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:44:30,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:30,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:44:30,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:44:30,430 INFO L87 Difference]: Start difference. First operand 1652 states and 2591 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:44:31,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:31,365 INFO L93 Difference]: Finished difference Result 4823 states and 7597 transitions. [2024-11-24 00:44:31,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:44:31,366 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 308 [2024-11-24 00:44:31,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:31,380 INFO L225 Difference]: With dead ends: 4823 [2024-11-24 00:44:31,380 INFO L226 Difference]: Without dead ends: 3297 [2024-11-24 00:44:31,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:44:31,385 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 420 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:31,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 1111 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:44:31,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3297 states. [2024-11-24 00:44:31,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3297 to 1905. [2024-11-24 00:44:31,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1434 states have (on average 1.492329149232915) internal successors, (2140), 1446 states have internal predecessors, (2140), 438 states have call successors, (438), 32 states have call predecessors, (438), 32 states have return successors, (438), 426 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-24 00:44:31,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 3016 transitions. [2024-11-24 00:44:31,620 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 3016 transitions. Word has length 308 [2024-11-24 00:44:31,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:31,623 INFO L471 AbstractCegarLoop]: Abstraction has 1905 states and 3016 transitions. [2024-11-24 00:44:31,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:44:31,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 3016 transitions. [2024-11-24 00:44:31,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-24 00:44:31,627 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:31,628 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:44:31,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:44:31,628 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:31,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:31,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1151945798, now seen corresponding path program 1 times [2024-11-24 00:44:31,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:31,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423848410] [2024-11-24 00:44:31,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:31,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:44:39,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:39,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423848410] [2024-11-24 00:44:39,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423848410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:39,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:39,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 00:44:39,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758381658] [2024-11-24 00:44:39,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:39,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:44:39,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:39,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:44:39,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:44:39,144 INFO L87 Difference]: Start difference. First operand 1905 states and 3016 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:44:41,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:41,578 INFO L93 Difference]: Finished difference Result 5431 states and 8550 transitions. [2024-11-24 00:44:41,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 00:44:41,579 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 308 [2024-11-24 00:44:41,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:41,598 INFO L225 Difference]: With dead ends: 5431 [2024-11-24 00:44:41,599 INFO L226 Difference]: Without dead ends: 3665 [2024-11-24 00:44:41,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2024-11-24 00:44:41,605 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 958 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:41,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 1148 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 00:44:41,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3665 states. [2024-11-24 00:44:41,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3665 to 1925. [2024-11-24 00:44:41,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1454 states have (on average 1.4965612104539203) internal successors, (2176), 1466 states have internal predecessors, (2176), 438 states have call successors, (438), 32 states have call predecessors, (438), 32 states have return successors, (438), 426 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-24 00:44:41,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 3052 transitions. [2024-11-24 00:44:41,837 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 3052 transitions. Word has length 308 [2024-11-24 00:44:41,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:41,838 INFO L471 AbstractCegarLoop]: Abstraction has 1925 states and 3052 transitions. [2024-11-24 00:44:41,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:44:41,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 3052 transitions. [2024-11-24 00:44:41,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-24 00:44:41,841 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:41,842 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:44:41,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:44:41,843 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:41,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:41,843 INFO L85 PathProgramCache]: Analyzing trace with hash -130986886, now seen corresponding path program 1 times [2024-11-24 00:44:41,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:41,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420277968] [2024-11-24 00:44:41,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:41,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:47,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:44:47,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:47,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420277968] [2024-11-24 00:44:47,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420277968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:47,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:47,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 00:44:47,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397578111] [2024-11-24 00:44:47,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:47,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:44:47,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:47,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:44:47,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:44:47,123 INFO L87 Difference]: Start difference. First operand 1925 states and 3052 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:44:49,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:44:49,838 INFO L93 Difference]: Finished difference Result 5089 states and 8035 transitions. [2024-11-24 00:44:49,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:44:49,839 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 308 [2024-11-24 00:44:49,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:44:49,853 INFO L225 Difference]: With dead ends: 5089 [2024-11-24 00:44:49,853 INFO L226 Difference]: Without dead ends: 3323 [2024-11-24 00:44:49,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2024-11-24 00:44:49,857 INFO L435 NwaCegarLoop]: 239 mSDtfsCounter, 648 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:44:49,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 1380 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-24 00:44:49,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2024-11-24 00:44:50,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 1925. [2024-11-24 00:44:50,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1454 states have (on average 1.4965612104539203) internal successors, (2176), 1466 states have internal predecessors, (2176), 438 states have call successors, (438), 32 states have call predecessors, (438), 32 states have return successors, (438), 426 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-24 00:44:50,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 3052 transitions. [2024-11-24 00:44:50,062 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 3052 transitions. Word has length 308 [2024-11-24 00:44:50,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:44:50,063 INFO L471 AbstractCegarLoop]: Abstraction has 1925 states and 3052 transitions. [2024-11-24 00:44:50,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:44:50,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 3052 transitions. [2024-11-24 00:44:50,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-24 00:44:50,067 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:44:50,067 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:44:50,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:44:50,067 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:44:50,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:44:50,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1148876792, now seen corresponding path program 1 times [2024-11-24 00:44:50,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:44:50,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126846460] [2024-11-24 00:44:50,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:44:50,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:44:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:44:58,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:44:58,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:44:58,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126846460] [2024-11-24 00:44:58,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126846460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:44:58,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:44:58,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 00:44:58,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847694273] [2024-11-24 00:44:58,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:44:58,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:44:58,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:44:58,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:44:58,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:44:58,694 INFO L87 Difference]: Start difference. First operand 1925 states and 3052 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:45:00,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:00,177 INFO L93 Difference]: Finished difference Result 4737 states and 7484 transitions. [2024-11-24 00:45:00,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:45:00,178 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 308 [2024-11-24 00:45:00,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:00,192 INFO L225 Difference]: With dead ends: 4737 [2024-11-24 00:45:00,192 INFO L226 Difference]: Without dead ends: 2971 [2024-11-24 00:45:00,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:45:00,197 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 442 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:00,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 836 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:45:00,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2024-11-24 00:45:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1945. [2024-11-24 00:45:00,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1945 states, 1474 states have (on average 1.503392130257802) internal successors, (2216), 1486 states have internal predecessors, (2216), 438 states have call successors, (438), 32 states have call predecessors, (438), 32 states have return successors, (438), 426 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-24 00:45:00,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3092 transitions. [2024-11-24 00:45:00,413 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3092 transitions. Word has length 308 [2024-11-24 00:45:00,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:00,413 INFO L471 AbstractCegarLoop]: Abstraction has 1945 states and 3092 transitions. [2024-11-24 00:45:00,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:45:00,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3092 transitions. [2024-11-24 00:45:00,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-24 00:45:00,417 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:00,417 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:00,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:45:00,417 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:00,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:00,418 INFO L85 PathProgramCache]: Analyzing trace with hash 87867832, now seen corresponding path program 1 times [2024-11-24 00:45:00,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:00,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974395341] [2024-11-24 00:45:00,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:00,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:01,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:45:01,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:01,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974395341] [2024-11-24 00:45:01,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974395341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:01,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:01,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:45:01,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537047464] [2024-11-24 00:45:01,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:01,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:45:01,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:01,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:45:01,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:45:01,834 INFO L87 Difference]: Start difference. First operand 1945 states and 3092 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:45:02,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:02,808 INFO L93 Difference]: Finished difference Result 4531 states and 7178 transitions. [2024-11-24 00:45:02,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:45:02,809 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 308 [2024-11-24 00:45:02,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:02,822 INFO L225 Difference]: With dead ends: 4531 [2024-11-24 00:45:02,822 INFO L226 Difference]: Without dead ends: 2733 [2024-11-24 00:45:02,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:45:02,827 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 434 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:02,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1071 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:45:02,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2024-11-24 00:45:03,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 1939. [2024-11-24 00:45:03,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1468 states have (on average 1.5040871934604905) internal successors, (2208), 1480 states have internal predecessors, (2208), 438 states have call successors, (438), 32 states have call predecessors, (438), 32 states have return successors, (438), 426 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-24 00:45:03,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 3084 transitions. [2024-11-24 00:45:03,045 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 3084 transitions. Word has length 308 [2024-11-24 00:45:03,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:03,045 INFO L471 AbstractCegarLoop]: Abstraction has 1939 states and 3084 transitions. [2024-11-24 00:45:03,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:45:03,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 3084 transitions. [2024-11-24 00:45:03,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-24 00:45:03,048 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:03,049 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:03,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:45:03,049 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:03,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:03,050 INFO L85 PathProgramCache]: Analyzing trace with hash 2003706430, now seen corresponding path program 1 times [2024-11-24 00:45:03,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:03,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323762835] [2024-11-24 00:45:03,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:03,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:12,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:45:12,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:12,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323762835] [2024-11-24 00:45:12,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323762835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:12,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:12,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 00:45:12,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850586880] [2024-11-24 00:45:12,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:12,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:45:12,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:12,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:45:12,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:45:12,899 INFO L87 Difference]: Start difference. First operand 1939 states and 3084 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:45:15,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:15,416 INFO L93 Difference]: Finished difference Result 4721 states and 7461 transitions. [2024-11-24 00:45:15,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:45:15,417 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 308 [2024-11-24 00:45:15,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:15,429 INFO L225 Difference]: With dead ends: 4721 [2024-11-24 00:45:15,429 INFO L226 Difference]: Without dead ends: 2923 [2024-11-24 00:45:15,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-11-24 00:45:15,434 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 434 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:15,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1291 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-24 00:45:15,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2024-11-24 00:45:15,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1953. [2024-11-24 00:45:15,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1482 states have (on average 1.5087719298245614) internal successors, (2236), 1494 states have internal predecessors, (2236), 438 states have call successors, (438), 32 states have call predecessors, (438), 32 states have return successors, (438), 426 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-24 00:45:15,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 3112 transitions. [2024-11-24 00:45:15,651 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 3112 transitions. Word has length 308 [2024-11-24 00:45:15,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:15,652 INFO L471 AbstractCegarLoop]: Abstraction has 1953 states and 3112 transitions. [2024-11-24 00:45:15,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:45:15,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 3112 transitions. [2024-11-24 00:45:15,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-24 00:45:15,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:15,656 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:15,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 00:45:15,656 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:15,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:15,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1011397188, now seen corresponding path program 1 times [2024-11-24 00:45:15,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:15,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134525621] [2024-11-24 00:45:15,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:15,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:15,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:45:15,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:15,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134525621] [2024-11-24 00:45:15,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134525621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:15,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:15,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:45:15,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129054503] [2024-11-24 00:45:15,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:15,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:45:15,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:15,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:45:15,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:45:15,962 INFO L87 Difference]: Start difference. First operand 1953 states and 3112 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:45:16,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:16,187 INFO L93 Difference]: Finished difference Result 4137 states and 6577 transitions. [2024-11-24 00:45:16,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:45:16,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 308 [2024-11-24 00:45:16,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:16,198 INFO L225 Difference]: With dead ends: 4137 [2024-11-24 00:45:16,198 INFO L226 Difference]: Without dead ends: 2339 [2024-11-24 00:45:16,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:45:16,203 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 126 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:16,204 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 668 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:45:16,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2024-11-24 00:45:16,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 1845. [2024-11-24 00:45:16,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1845 states, 1405 states have (on average 1.5281138790035587) internal successors, (2147), 1409 states have internal predecessors, (2147), 406 states have call successors, (406), 33 states have call predecessors, (406), 33 states have return successors, (406), 402 states have call predecessors, (406), 406 states have call successors, (406) [2024-11-24 00:45:16,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1845 states to 1845 states and 2959 transitions. [2024-11-24 00:45:16,397 INFO L78 Accepts]: Start accepts. Automaton has 1845 states and 2959 transitions. Word has length 308 [2024-11-24 00:45:16,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:16,398 INFO L471 AbstractCegarLoop]: Abstraction has 1845 states and 2959 transitions. [2024-11-24 00:45:16,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:45:16,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1845 states and 2959 transitions. [2024-11-24 00:45:16,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-24 00:45:16,401 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:16,401 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:16,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 00:45:16,401 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:16,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:16,402 INFO L85 PathProgramCache]: Analyzing trace with hash 9561724, now seen corresponding path program 1 times [2024-11-24 00:45:16,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:16,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409945560] [2024-11-24 00:45:16,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:16,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:45:23,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:23,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409945560] [2024-11-24 00:45:23,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409945560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:23,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:23,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-24 00:45:23,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033025265] [2024-11-24 00:45:23,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:23,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:45:23,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:23,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:45:23,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:45:23,995 INFO L87 Difference]: Start difference. First operand 1845 states and 2959 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-24 00:45:26,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:26,885 INFO L93 Difference]: Finished difference Result 4357 states and 6951 transitions. [2024-11-24 00:45:26,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:45:26,886 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 308 [2024-11-24 00:45:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:26,893 INFO L225 Difference]: With dead ends: 4357 [2024-11-24 00:45:26,893 INFO L226 Difference]: Without dead ends: 2671 [2024-11-24 00:45:26,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2024-11-24 00:45:26,897 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 437 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:26,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1549 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 00:45:26,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2671 states. [2024-11-24 00:45:27,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2671 to 1853. [2024-11-24 00:45:27,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1413 states have (on average 1.5279547062986554) internal successors, (2159), 1417 states have internal predecessors, (2159), 406 states have call successors, (406), 33 states have call predecessors, (406), 33 states have return successors, (406), 402 states have call predecessors, (406), 406 states have call successors, (406) [2024-11-24 00:45:27,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 2971 transitions. [2024-11-24 00:45:27,082 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 2971 transitions. Word has length 308 [2024-11-24 00:45:27,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:27,082 INFO L471 AbstractCegarLoop]: Abstraction has 1853 states and 2971 transitions. [2024-11-24 00:45:27,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-24 00:45:27,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 2971 transitions. [2024-11-24 00:45:27,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-24 00:45:27,085 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:27,085 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:27,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 00:45:27,086 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:27,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:27,086 INFO L85 PathProgramCache]: Analyzing trace with hash 228416442, now seen corresponding path program 1 times [2024-11-24 00:45:27,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:27,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20460417] [2024-11-24 00:45:27,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:27,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:45:33,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:33,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20460417] [2024-11-24 00:45:33,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20460417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:45:33,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:45:33,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 00:45:33,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719007166] [2024-11-24 00:45:33,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:45:33,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 00:45:33,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:33,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 00:45:33,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:45:33,579 INFO L87 Difference]: Start difference. First operand 1853 states and 2971 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:45:35,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:35,662 INFO L93 Difference]: Finished difference Result 4077 states and 6520 transitions. [2024-11-24 00:45:35,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:45:35,662 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 308 [2024-11-24 00:45:35,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:35,674 INFO L225 Difference]: With dead ends: 4077 [2024-11-24 00:45:35,674 INFO L226 Difference]: Without dead ends: 2391 [2024-11-24 00:45:35,678 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-11-24 00:45:35,678 INFO L435 NwaCegarLoop]: 245 mSDtfsCounter, 273 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:35,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1197 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 00:45:35,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2024-11-24 00:45:35,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 1845. [2024-11-24 00:45:35,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1845 states, 1405 states have (on average 1.5281138790035587) internal successors, (2147), 1409 states have internal predecessors, (2147), 406 states have call successors, (406), 33 states have call predecessors, (406), 33 states have return successors, (406), 402 states have call predecessors, (406), 406 states have call successors, (406) [2024-11-24 00:45:35,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1845 states to 1845 states and 2959 transitions. [2024-11-24 00:45:35,876 INFO L78 Accepts]: Start accepts. Automaton has 1845 states and 2959 transitions. Word has length 308 [2024-11-24 00:45:35,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:35,877 INFO L471 AbstractCegarLoop]: Abstraction has 1845 states and 2959 transitions. [2024-11-24 00:45:35,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:45:35,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1845 states and 2959 transitions. [2024-11-24 00:45:35,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-24 00:45:35,880 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:35,880 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:45:35,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 00:45:35,880 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:35,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:35,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1609943992, now seen corresponding path program 1 times [2024-11-24 00:45:35,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:35,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847889576] [2024-11-24 00:45:35,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:35,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:46:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:46:23,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:46:23,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847889576] [2024-11-24 00:46:23,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847889576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:46:23,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:46:23,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 00:46:23,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942514234] [2024-11-24 00:46:23,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:46:23,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:46:23,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:46:23,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:46:23,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:46:23,384 INFO L87 Difference]: Start difference. First operand 1845 states and 2959 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:46:25,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:46:25,534 INFO L93 Difference]: Finished difference Result 2217 states and 3441 transitions. [2024-11-24 00:46:25,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:46:25,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 309 [2024-11-24 00:46:25,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:46:25,543 INFO L225 Difference]: With dead ends: 2217 [2024-11-24 00:46:25,543 INFO L226 Difference]: Without dead ends: 2215 [2024-11-24 00:46:25,544 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:46:25,545 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 96 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:46:25,545 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 1622 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:46:25,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2024-11-24 00:46:25,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 1981. [2024-11-24 00:46:25,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1981 states, 1533 states have (on average 1.5153294194390086) internal successors, (2323), 1537 states have internal predecessors, (2323), 406 states have call successors, (406), 41 states have call predecessors, (406), 41 states have return successors, (406), 402 states have call predecessors, (406), 406 states have call successors, (406) [2024-11-24 00:46:25,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3135 transitions. [2024-11-24 00:46:25,800 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3135 transitions. Word has length 309 [2024-11-24 00:46:25,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:46:25,801 INFO L471 AbstractCegarLoop]: Abstraction has 1981 states and 3135 transitions. [2024-11-24 00:46:25,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:46:25,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3135 transitions. [2024-11-24 00:46:25,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-24 00:46:25,803 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:46:25,804 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:46:25,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 00:46:25,804 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:46:25,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:46:25,805 INFO L85 PathProgramCache]: Analyzing trace with hash -3238527, now seen corresponding path program 1 times [2024-11-24 00:46:25,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:46:25,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083921325] [2024-11-24 00:46:25,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:46:25,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:46:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:46:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:46:25,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:46:25,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083921325] [2024-11-24 00:46:25,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083921325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:46:25,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:46:25,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:46:25,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646741787] [2024-11-24 00:46:25,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:46:25,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:46:25,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:46:25,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:46:25,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:46:25,947 INFO L87 Difference]: Start difference. First operand 1981 states and 3135 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:46:26,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:46:26,372 INFO L93 Difference]: Finished difference Result 4149 states and 6453 transitions. [2024-11-24 00:46:26,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:46:26,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 310 [2024-11-24 00:46:26,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:46:26,385 INFO L225 Difference]: With dead ends: 4149 [2024-11-24 00:46:26,385 INFO L226 Difference]: Without dead ends: 2327 [2024-11-24 00:46:26,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:46:26,391 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 41 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:46:26,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 420 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:46:26,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2327 states. [2024-11-24 00:46:26,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2327 to 2317. [2024-11-24 00:46:26,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 1765 states have (on average 1.4521246458923514) internal successors, (2563), 1777 states have internal predecessors, (2563), 486 states have call successors, (486), 65 states have call predecessors, (486), 65 states have return successors, (486), 474 states have call predecessors, (486), 486 states have call successors, (486) [2024-11-24 00:46:26,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 3535 transitions. [2024-11-24 00:46:26,823 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 3535 transitions. Word has length 310 [2024-11-24 00:46:26,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:46:26,824 INFO L471 AbstractCegarLoop]: Abstraction has 2317 states and 3535 transitions. [2024-11-24 00:46:26,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:46:26,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 3535 transitions. [2024-11-24 00:46:26,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-24 00:46:26,828 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:46:26,828 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:46:26,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 00:46:26,828 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:46:26,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:46:26,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1999482816, now seen corresponding path program 1 times [2024-11-24 00:46:26,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:46:26,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365344660] [2024-11-24 00:46:26,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:46:26,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:46:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:48:06,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:48:06,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:48:06,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365344660] [2024-11-24 00:48:06,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365344660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:48:06,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:48:06,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 00:48:06,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540665680] [2024-11-24 00:48:06,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:48:06,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:48:06,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:48:06,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:48:06,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:48:06,357 INFO L87 Difference]: Start difference. First operand 2317 states and 3535 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:48:07,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:48:07,731 INFO L93 Difference]: Finished difference Result 2939 states and 4298 transitions. [2024-11-24 00:48:07,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:48:07,731 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 310 [2024-11-24 00:48:07,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:48:07,742 INFO L225 Difference]: With dead ends: 2939 [2024-11-24 00:48:07,742 INFO L226 Difference]: Without dead ends: 2937 [2024-11-24 00:48:07,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:48:07,745 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 114 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:48:07,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1401 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:48:07,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2024-11-24 00:48:08,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2317. [2024-11-24 00:48:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 1765 states have (on average 1.4521246458923514) internal successors, (2563), 1777 states have internal predecessors, (2563), 486 states have call successors, (486), 65 states have call predecessors, (486), 65 states have return successors, (486), 474 states have call predecessors, (486), 486 states have call successors, (486) [2024-11-24 00:48:08,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 3535 transitions. [2024-11-24 00:48:08,163 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 3535 transitions. Word has length 310 [2024-11-24 00:48:08,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:48:08,163 INFO L471 AbstractCegarLoop]: Abstraction has 2317 states and 3535 transitions. [2024-11-24 00:48:08,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:48:08,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 3535 transitions. [2024-11-24 00:48:08,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-24 00:48:08,166 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:48:08,166 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:48:08,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 00:48:08,167 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:48:08,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:48:08,168 INFO L85 PathProgramCache]: Analyzing trace with hash -58519004, now seen corresponding path program 1 times [2024-11-24 00:48:08,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:48:08,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827498131] [2024-11-24 00:48:08,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:48:08,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:48:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:48:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:48:08,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:48:08,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827498131] [2024-11-24 00:48:08,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827498131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:48:08,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:48:08,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:48:08,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33637270] [2024-11-24 00:48:08,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:48:08,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:48:08,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:48:08,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:48:08,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:48:08,309 INFO L87 Difference]: Start difference. First operand 2317 states and 3535 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:48:08,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:48:08,640 INFO L93 Difference]: Finished difference Result 4521 states and 6864 transitions. [2024-11-24 00:48:08,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:48:08,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 310 [2024-11-24 00:48:08,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:48:08,653 INFO L225 Difference]: With dead ends: 4521 [2024-11-24 00:48:08,653 INFO L226 Difference]: Without dead ends: 2363 [2024-11-24 00:48:08,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:48:08,662 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 48 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:48:08,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 394 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:48:08,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2024-11-24 00:48:08,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2089. [2024-11-24 00:48:08,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 1632 states have (on average 1.4791666666666667) internal successors, (2414), 1636 states have internal predecessors, (2414), 406 states have call successors, (406), 50 states have call predecessors, (406), 50 states have return successors, (406), 402 states have call predecessors, (406), 406 states have call successors, (406) [2024-11-24 00:48:08,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 3226 transitions. [2024-11-24 00:48:08,951 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 3226 transitions. Word has length 310 [2024-11-24 00:48:08,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:48:08,951 INFO L471 AbstractCegarLoop]: Abstraction has 2089 states and 3226 transitions. [2024-11-24 00:48:08,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:48:08,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 3226 transitions. [2024-11-24 00:48:08,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-24 00:48:08,954 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:48:08,954 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:48:08,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 00:48:08,955 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:48:08,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:48:08,956 INFO L85 PathProgramCache]: Analyzing trace with hash -185983851, now seen corresponding path program 1 times [2024-11-24 00:48:08,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:48:08,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279116806] [2024-11-24 00:48:08,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:48:08,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:48:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:48:55,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:48:55,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:48:55,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279116806] [2024-11-24 00:48:55,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279116806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:48:55,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:48:55,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 00:48:55,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321522406] [2024-11-24 00:48:55,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:48:55,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:48:55,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:48:55,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:48:55,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:48:55,643 INFO L87 Difference]: Start difference. First operand 2089 states and 3226 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:48:57,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:48:57,868 INFO L93 Difference]: Finished difference Result 2429 states and 3676 transitions. [2024-11-24 00:48:57,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:48:57,869 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 311 [2024-11-24 00:48:57,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:48:57,875 INFO L225 Difference]: With dead ends: 2429 [2024-11-24 00:48:57,875 INFO L226 Difference]: Without dead ends: 2427 [2024-11-24 00:48:57,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:48:57,876 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 92 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:48:57,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 1388 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:48:57,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2024-11-24 00:48:58,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2169. [2024-11-24 00:48:58,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 1712 states have (on average 1.4848130841121496) internal successors, (2542), 1716 states have internal predecessors, (2542), 406 states have call successors, (406), 50 states have call predecessors, (406), 50 states have return successors, (406), 402 states have call predecessors, (406), 406 states have call successors, (406) [2024-11-24 00:48:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3354 transitions. [2024-11-24 00:48:58,157 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3354 transitions. Word has length 311 [2024-11-24 00:48:58,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:48:58,157 INFO L471 AbstractCegarLoop]: Abstraction has 2169 states and 3354 transitions. [2024-11-24 00:48:58,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:48:58,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3354 transitions. [2024-11-24 00:48:58,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-24 00:48:58,160 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:48:58,160 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:48:58,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 00:48:58,160 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:48:58,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:48:58,161 INFO L85 PathProgramCache]: Analyzing trace with hash 39280863, now seen corresponding path program 1 times [2024-11-24 00:48:58,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:48:58,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809418697] [2024-11-24 00:48:58,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:48:58,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:48:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:49:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:49:55,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:49:55,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809418697] [2024-11-24 00:49:55,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809418697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:49:55,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:49:55,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 00:49:55,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645777498] [2024-11-24 00:49:55,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:49:55,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 00:49:55,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:49:55,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 00:49:55,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:49:55,898 INFO L87 Difference]: Start difference. First operand 2169 states and 3354 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:49:57,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:49:57,103 INFO L93 Difference]: Finished difference Result 2647 states and 3941 transitions. [2024-11-24 00:49:57,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:49:57,104 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 311 [2024-11-24 00:49:57,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:49:57,113 INFO L225 Difference]: With dead ends: 2647 [2024-11-24 00:49:57,113 INFO L226 Difference]: Without dead ends: 2645 [2024-11-24 00:49:57,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:49:57,115 INFO L435 NwaCegarLoop]: 279 mSDtfsCounter, 122 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:49:57,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1618 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:49:57,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2024-11-24 00:49:57,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2129. [2024-11-24 00:49:57,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 1672 states have (on average 1.4916267942583732) internal successors, (2494), 1676 states have internal predecessors, (2494), 406 states have call successors, (406), 50 states have call predecessors, (406), 50 states have return successors, (406), 402 states have call predecessors, (406), 406 states have call successors, (406) [2024-11-24 00:49:57,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 3306 transitions. [2024-11-24 00:49:57,418 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 3306 transitions. Word has length 311 [2024-11-24 00:49:57,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:49:57,419 INFO L471 AbstractCegarLoop]: Abstraction has 2129 states and 3306 transitions. [2024-11-24 00:49:57,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:49:57,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 3306 transitions. [2024-11-24 00:49:57,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-24 00:49:57,421 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:49:57,421 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:49:57,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-24 00:49:57,422 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:49:57,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:49:57,422 INFO L85 PathProgramCache]: Analyzing trace with hash 243460641, now seen corresponding path program 1 times [2024-11-24 00:49:57,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:49:57,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849952789] [2024-11-24 00:49:57,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:49:57,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:49:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:49:57,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:49:57,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:49:57,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849952789] [2024-11-24 00:49:57,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849952789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:49:57,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:49:57,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:49:57,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330233827] [2024-11-24 00:49:57,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:49:57,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:49:57,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:49:57,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:49:57,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:49:57,562 INFO L87 Difference]: Start difference. First operand 2129 states and 3306 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:49:58,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:49:58,021 INFO L93 Difference]: Finished difference Result 4481 states and 6832 transitions. [2024-11-24 00:49:58,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:49:58,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 312 [2024-11-24 00:49:58,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:49:58,032 INFO L225 Difference]: With dead ends: 4481 [2024-11-24 00:49:58,032 INFO L226 Difference]: Without dead ends: 2515 [2024-11-24 00:49:58,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:49:58,036 INFO L435 NwaCegarLoop]: 246 mSDtfsCounter, 41 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:49:58,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 431 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:49:58,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2024-11-24 00:49:58,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2209. [2024-11-24 00:49:58,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 1752 states have (on average 1.4691780821917808) internal successors, (2574), 1756 states have internal predecessors, (2574), 406 states have call successors, (406), 50 states have call predecessors, (406), 50 states have return successors, (406), 402 states have call predecessors, (406), 406 states have call successors, (406) [2024-11-24 00:49:58,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3386 transitions. [2024-11-24 00:49:58,224 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3386 transitions. Word has length 312 [2024-11-24 00:49:58,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:49:58,225 INFO L471 AbstractCegarLoop]: Abstraction has 2209 states and 3386 transitions. [2024-11-24 00:49:58,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:49:58,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3386 transitions. [2024-11-24 00:49:58,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-24 00:49:58,228 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:49:58,228 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:49:58,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-24 00:49:58,229 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:49:58,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:49:58,229 INFO L85 PathProgramCache]: Analyzing trace with hash 2112392677, now seen corresponding path program 1 times [2024-11-24 00:49:58,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:49:58,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918718669] [2024-11-24 00:49:58,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:49:58,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:49:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:50:54,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:50:54,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:50:54,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918718669] [2024-11-24 00:50:54,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918718669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:50:54,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:50:54,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 00:50:54,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887582574] [2024-11-24 00:50:54,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:50:54,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:50:54,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:50:54,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:50:54,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:50:54,923 INFO L87 Difference]: Start difference. First operand 2209 states and 3386 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:50:56,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:50:56,143 INFO L93 Difference]: Finished difference Result 2767 states and 4053 transitions. [2024-11-24 00:50:56,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:50:56,144 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 312 [2024-11-24 00:50:56,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:50:56,150 INFO L225 Difference]: With dead ends: 2767 [2024-11-24 00:50:56,150 INFO L226 Difference]: Without dead ends: 2765 [2024-11-24 00:50:56,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:50:56,151 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 110 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:50:56,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 1379 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:50:56,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2024-11-24 00:50:56,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2209. [2024-11-24 00:50:56,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 1752 states have (on average 1.4691780821917808) internal successors, (2574), 1756 states have internal predecessors, (2574), 406 states have call successors, (406), 50 states have call predecessors, (406), 50 states have return successors, (406), 402 states have call predecessors, (406), 406 states have call successors, (406) [2024-11-24 00:50:56,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3386 transitions. [2024-11-24 00:50:56,350 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3386 transitions. Word has length 312 [2024-11-24 00:50:56,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:50:56,350 INFO L471 AbstractCegarLoop]: Abstraction has 2209 states and 3386 transitions. [2024-11-24 00:50:56,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:50:56,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3386 transitions. [2024-11-24 00:50:56,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-24 00:50:56,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:50:56,353 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:50:56,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-24 00:50:56,353 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:50:56,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:50:56,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1642958916, now seen corresponding path program 1 times [2024-11-24 00:50:56,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:50:56,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997963608] [2024-11-24 00:50:56,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:50:56,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:50:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:50:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:50:56,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:50:56,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997963608] [2024-11-24 00:50:56,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997963608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:50:56,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:50:56,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:50:56,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856266102] [2024-11-24 00:50:56,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:50:56,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:50:56,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:50:56,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:50:56,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:50:56,463 INFO L87 Difference]: Start difference. First operand 2209 states and 3386 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:50:57,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:50:57,006 INFO L93 Difference]: Finished difference Result 4529 states and 6864 transitions. [2024-11-24 00:50:57,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:50:57,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 312 [2024-11-24 00:50:57,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:50:57,012 INFO L225 Difference]: With dead ends: 4529 [2024-11-24 00:50:57,012 INFO L226 Difference]: Without dead ends: 2483 [2024-11-24 00:50:57,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:50:57,015 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 44 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:50:57,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 398 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:50:57,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2024-11-24 00:50:57,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2209. [2024-11-24 00:50:57,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 1752 states have (on average 1.4646118721461188) internal successors, (2566), 1756 states have internal predecessors, (2566), 406 states have call successors, (406), 50 states have call predecessors, (406), 50 states have return successors, (406), 402 states have call predecessors, (406), 406 states have call successors, (406) [2024-11-24 00:50:57,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3378 transitions. [2024-11-24 00:50:57,204 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3378 transitions. Word has length 312 [2024-11-24 00:50:57,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:50:57,204 INFO L471 AbstractCegarLoop]: Abstraction has 2209 states and 3378 transitions. [2024-11-24 00:50:57,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:50:57,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3378 transitions. [2024-11-24 00:50:57,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-11-24 00:50:57,207 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:50:57,207 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:50:57,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-24 00:50:57,207 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:50:57,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:50:57,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1106111570, now seen corresponding path program 1 times [2024-11-24 00:50:57,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:50:57,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367765724] [2024-11-24 00:50:57,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:50:57,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:50:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:52:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:52:04,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:52:04,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367765724] [2024-11-24 00:52:04,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367765724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:52:04,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:52:04,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 00:52:04,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603847019] [2024-11-24 00:52:04,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:52:04,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:52:04,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:52:04,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:52:04,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:52:04,060 INFO L87 Difference]: Start difference. First operand 2209 states and 3378 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:52:05,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:52:05,679 INFO L93 Difference]: Finished difference Result 2863 states and 4149 transitions. [2024-11-24 00:52:05,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:52:05,680 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 313 [2024-11-24 00:52:05,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:52:05,688 INFO L225 Difference]: With dead ends: 2863 [2024-11-24 00:52:05,688 INFO L226 Difference]: Without dead ends: 2861 [2024-11-24 00:52:05,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:52:05,689 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 106 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:52:05,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1430 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:52:05,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2024-11-24 00:52:05,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 2265. [2024-11-24 00:52:05,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2265 states, 1808 states have (on average 1.454646017699115) internal successors, (2630), 1812 states have internal predecessors, (2630), 406 states have call successors, (406), 50 states have call predecessors, (406), 50 states have return successors, (406), 402 states have call predecessors, (406), 406 states have call successors, (406) [2024-11-24 00:52:05,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2265 states to 2265 states and 3442 transitions. [2024-11-24 00:52:05,871 INFO L78 Accepts]: Start accepts. Automaton has 2265 states and 3442 transitions. Word has length 313 [2024-11-24 00:52:05,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:52:05,872 INFO L471 AbstractCegarLoop]: Abstraction has 2265 states and 3442 transitions. [2024-11-24 00:52:05,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:52:05,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2265 states and 3442 transitions. [2024-11-24 00:52:05,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-11-24 00:52:05,873 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:52:05,873 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:52:05,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-24 00:52:05,874 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:52:05,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:52:05,874 INFO L85 PathProgramCache]: Analyzing trace with hash 648083080, now seen corresponding path program 1 times [2024-11-24 00:52:05,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:52:05,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368199045] [2024-11-24 00:52:05,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:52:05,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:52:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:52:13,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-24 00:52:13,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:52:13,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368199045] [2024-11-24 00:52:13,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368199045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:52:13,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:52:13,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 00:52:13,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248793328] [2024-11-24 00:52:13,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:52:13,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 00:52:13,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:52:13,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 00:52:13,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:52:13,057 INFO L87 Difference]: Start difference. First operand 2265 states and 3442 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:52:14,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:52:14,147 INFO L93 Difference]: Finished difference Result 2743 states and 4013 transitions. [2024-11-24 00:52:14,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:52:14,148 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 313 [2024-11-24 00:52:14,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:52:14,156 INFO L225 Difference]: With dead ends: 2743 [2024-11-24 00:52:14,156 INFO L226 Difference]: Without dead ends: 2741 [2024-11-24 00:52:14,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:52:14,158 INFO L435 NwaCegarLoop]: 278 mSDtfsCounter, 90 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:52:14,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 2277 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:52:14,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2024-11-24 00:52:14,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 2217. [2024-11-24 00:52:14,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2217 states, 1760 states have (on average 1.4625) internal successors, (2574), 1764 states have internal predecessors, (2574), 406 states have call successors, (406), 50 states have call predecessors, (406), 50 states have return successors, (406), 402 states have call predecessors, (406), 406 states have call successors, (406) [2024-11-24 00:52:14,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 3386 transitions. [2024-11-24 00:52:14,464 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 3386 transitions. Word has length 313 [2024-11-24 00:52:14,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:52:14,465 INFO L471 AbstractCegarLoop]: Abstraction has 2217 states and 3386 transitions. [2024-11-24 00:52:14,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-24 00:52:14,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 3386 transitions. [2024-11-24 00:52:14,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-24 00:52:14,467 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:52:14,467 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:52:14,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-24 00:52:14,468 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:52:14,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:52:14,468 INFO L85 PathProgramCache]: Analyzing trace with hash -548936000, now seen corresponding path program 1 times [2024-11-24 00:52:14,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:52:14,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482008995] [2024-11-24 00:52:14,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:52:14,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:52:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:52:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 249 proven. 39 refuted. 0 times theorem prover too weak. 4612 trivial. 0 not checked. [2024-11-24 00:52:14,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:52:14,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482008995] [2024-11-24 00:52:14,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482008995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:52:14,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300308654] [2024-11-24 00:52:14,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:52:14,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:52:14,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:52:14,920 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:52:14,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:52:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:52:15,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-24 00:52:15,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:52:15,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1479 proven. 39 refuted. 0 times theorem prover too weak. 3382 trivial. 0 not checked. [2024-11-24 00:52:15,953 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:52:16,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 249 proven. 42 refuted. 0 times theorem prover too weak. 4609 trivial. 0 not checked. [2024-11-24 00:52:16,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300308654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:52:16,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:52:16,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 20 [2024-11-24 00:52:16,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234769120] [2024-11-24 00:52:16,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:52:16,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 00:52:16,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:52:16,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 00:52:16,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2024-11-24 00:52:16,526 INFO L87 Difference]: Start difference. First operand 2217 states and 3386 transitions. Second operand has 20 states, 20 states have (on average 7.0) internal successors, (140), 20 states have internal predecessors, (140), 8 states have call successors, (150), 4 states have call predecessors, (150), 9 states have return successors, (150), 8 states have call predecessors, (150), 8 states have call successors, (150) [2024-11-24 00:52:18,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:52:18,970 INFO L93 Difference]: Finished difference Result 6117 states and 9263 transitions. [2024-11-24 00:52:18,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-24 00:52:18,971 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.0) internal successors, (140), 20 states have internal predecessors, (140), 8 states have call successors, (150), 4 states have call predecessors, (150), 9 states have return successors, (150), 8 states have call predecessors, (150), 8 states have call successors, (150) Word has length 314 [2024-11-24 00:52:18,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:52:18,981 INFO L225 Difference]: With dead ends: 6117 [2024-11-24 00:52:18,981 INFO L226 Difference]: Without dead ends: 4035 [2024-11-24 00:52:18,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 618 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=771, Unknown=0, NotChecked=0, Total=1056 [2024-11-24 00:52:18,986 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 762 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 2313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:52:18,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 1527 Invalid, 2313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-24 00:52:18,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2024-11-24 00:52:19,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 2833. [2024-11-24 00:52:19,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2833 states, 2273 states have (on average 1.4637043554773428) internal successors, (3327), 2279 states have internal predecessors, (3327), 488 states have call successors, (488), 71 states have call predecessors, (488), 71 states have return successors, (488), 482 states have call predecessors, (488), 488 states have call successors, (488) [2024-11-24 00:52:19,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 4303 transitions. [2024-11-24 00:52:19,352 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 4303 transitions. Word has length 314 [2024-11-24 00:52:19,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:52:19,352 INFO L471 AbstractCegarLoop]: Abstraction has 2833 states and 4303 transitions. [2024-11-24 00:52:19,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.0) internal successors, (140), 20 states have internal predecessors, (140), 8 states have call successors, (150), 4 states have call predecessors, (150), 9 states have return successors, (150), 8 states have call predecessors, (150), 8 states have call successors, (150) [2024-11-24 00:52:19,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 4303 transitions. [2024-11-24 00:52:19,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-24 00:52:19,354 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:52:19,354 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:52:19,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:52:19,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:52:19,554 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:52:19,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:52:19,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1058409090, now seen corresponding path program 1 times [2024-11-24 00:52:19,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:52:19,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960065592] [2024-11-24 00:52:19,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:52:19,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:52:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:52:20,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 24 proven. 123 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2024-11-24 00:52:20,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:52:20,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960065592] [2024-11-24 00:52:20,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960065592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:52:20,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652044818] [2024-11-24 00:52:20,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:52:20,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:52:20,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:52:20,241 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:52:20,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29a5284c-df5f-4f2b-9e45-de03b50ec753/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:52:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:52:20,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-24 00:52:20,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1377 proven. 123 refuted. 0 times theorem prover too weak. 3400 trivial. 0 not checked. [2024-11-24 00:53:27,145 INFO L312 TraceCheckSpWp]: Computing backward predicates...