./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-31.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-31.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB --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 331deff5ee9f0a6f0b03656a3ea7e4b679f07dd47c7d7e953a5847c9d589ff92 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:12:43,821 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:12:43,923 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:12:43,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:12:43,932 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:12:43,971 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:12:43,971 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:12:43,972 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:12:43,972 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:12:43,972 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:12:43,973 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:12:43,974 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:12:43,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:12:43,974 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:12:43,975 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:12:43,975 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:12:43,975 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:12:43,976 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:12:43,976 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:12:43,976 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:12:43,976 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:12:43,976 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:12:43,976 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:12:43,976 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:12:43,977 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:12:43,977 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:12:43,977 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:12:43,977 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:12:43,977 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:12:43,977 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:12:43,978 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:12:43,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:12:43,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:12:43,978 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:12:43,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:12:43,979 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:12:43,979 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:12:43,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:12:43,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:12:43,979 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:12:43,979 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:12:43,979 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:12:43,979 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:12:43,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:12:43,980 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:12:43,980 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:12:43,980 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:12:43,980 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:12:43,981 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_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 331deff5ee9f0a6f0b03656a3ea7e4b679f07dd47c7d7e953a5847c9d589ff92 [2024-11-28 02:12:44,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:12:44,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:12:44,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:12:44,347 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:12:44,347 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:12:44,350 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-31.i [2024-11-28 02:12:47,340 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/data/0f4ebaff3/ee03a475027f49f39d5719ac925fec1e/FLAGaeddd531f [2024-11-28 02:12:47,690 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:12:47,695 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-31.i [2024-11-28 02:12:47,711 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/data/0f4ebaff3/ee03a475027f49f39d5719ac925fec1e/FLAGaeddd531f [2024-11-28 02:12:47,903 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/data/0f4ebaff3/ee03a475027f49f39d5719ac925fec1e [2024-11-28 02:12:47,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:12:47,907 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:12:47,909 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:12:47,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:12:47,916 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:12:47,917 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:12:47" (1/1) ... [2024-11-28 02:12:47,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51d9af14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:47, skipping insertion in model container [2024-11-28 02:12:47,920 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:12:47" (1/1) ... [2024-11-28 02:12:47,953 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:12:48,113 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_80e49f9f-9051-4171-902a-061256725ff3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-31.i[916,929] [2024-11-28 02:12:48,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:12:48,212 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:12:48,223 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_80e49f9f-9051-4171-902a-061256725ff3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-31.i[916,929] [2024-11-28 02:12:48,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:12:48,279 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:12:48,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48 WrapperNode [2024-11-28 02:12:48,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:12:48,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:12:48,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:12:48,281 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:12:48,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,299 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,347 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 258 [2024-11-28 02:12:48,349 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:12:48,350 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:12:48,350 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:12:48,350 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:12:48,359 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,364 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,382 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]. [2024-11-28 02:12:48,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,382 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,396 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,398 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,403 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,406 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,408 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,414 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:12:48,415 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:12:48,415 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:12:48,415 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:12:48,416 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:12:48,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:12:48,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:12:48,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:12:48,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:12:48,486 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:12:48,486 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:12:48,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:12:48,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:12:48,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:12:48,604 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:12:48,606 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:12:49,260 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-11-28 02:12:49,260 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:12:49,274 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:12:49,279 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:12:49,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:12:49 BoogieIcfgContainer [2024-11-28 02:12:49,279 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:12:49,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:12:49,282 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:12:49,287 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:12:49,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:12:47" (1/3) ... [2024-11-28 02:12:49,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf445f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:12:49, skipping insertion in model container [2024-11-28 02:12:49,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (2/3) ... [2024-11-28 02:12:49,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bf445f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:12:49, skipping insertion in model container [2024-11-28 02:12:49,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:12:49" (3/3) ... [2024-11-28 02:12:49,290 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-31.i [2024-11-28 02:12:49,307 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:12:49,311 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount100_file-31.i that has 2 procedures, 107 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:12:49,376 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:12:49,389 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;@125442ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:12:49,389 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:12:49,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 78 states have (on average 1.4615384615384615) internal successors, (114), 79 states have internal predecessors, (114), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-28 02:12:49,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-28 02:12:49,407 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:49,408 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:49,409 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:49,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:49,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1151108045, now seen corresponding path program 1 times [2024-11-28 02:12:49,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:49,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097281776] [2024-11-28 02:12:49,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:49,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:49,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-28 02:12:49,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:49,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097281776] [2024-11-28 02:12:49,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097281776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:12:49,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230614714] [2024-11-28 02:12:49,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:49,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:49,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:12:49,956 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:12:49,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:12:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:50,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:12:50,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:12:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-28 02:12:50,275 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:12:50,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230614714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:50,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:12:50,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:12:50,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314904323] [2024-11-28 02:12:50,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:50,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:12:50,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:50,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:12:50,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:12:50,319 INFO L87 Difference]: Start difference. First operand has 107 states, 78 states have (on average 1.4615384615384615) internal successors, (114), 79 states have internal predecessors, (114), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-28 02:12:50,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:50,368 INFO L93 Difference]: Finished difference Result 197 states and 337 transitions. [2024-11-28 02:12:50,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:12:50,371 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 173 [2024-11-28 02:12:50,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:50,379 INFO L225 Difference]: With dead ends: 197 [2024-11-28 02:12:50,380 INFO L226 Difference]: Without dead ends: 93 [2024-11-28 02:12:50,386 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:12:50,390 INFO L435 NwaCegarLoop]: 143 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, 143 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 [2024-11-28 02:12:50,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:12:50,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-28 02:12:50,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-28 02:12:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 65 states have (on average 1.4) internal successors, (91), 65 states have internal predecessors, (91), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-28 02:12:50,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 143 transitions. [2024-11-28 02:12:50,438 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 143 transitions. Word has length 173 [2024-11-28 02:12:50,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:50,439 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 143 transitions. [2024-11-28 02:12:50,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-28 02:12:50,439 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 143 transitions. [2024-11-28 02:12:50,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-28 02:12:50,443 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:50,444 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:50,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:12:50,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:12:50,648 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:50,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:50,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1351238789, now seen corresponding path program 1 times [2024-11-28 02:12:50,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:50,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5297554] [2024-11-28 02:12:50,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:50,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:51,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:12:51,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:51,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5297554] [2024-11-28 02:12:51,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5297554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:51,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:51,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:12:51,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631039849] [2024-11-28 02:12:51,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:51,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:12:51,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:51,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:12:51,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:12:51,494 INFO L87 Difference]: Start difference. First operand 93 states and 143 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:12:51,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:51,866 INFO L93 Difference]: Finished difference Result 274 states and 424 transitions. [2024-11-28 02:12:51,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:12:51,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 173 [2024-11-28 02:12:51,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:51,872 INFO L225 Difference]: With dead ends: 274 [2024-11-28 02:12:51,873 INFO L226 Difference]: Without dead ends: 184 [2024-11-28 02:12:51,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:12:51,874 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 96 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:51,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 385 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:12:51,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-28 02:12:51,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 146. [2024-11-28 02:12:51,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 91 states have (on average 1.3406593406593406) internal successors, (122), 91 states have internal predecessors, (122), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-28 02:12:51,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 226 transitions. [2024-11-28 02:12:51,922 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 226 transitions. Word has length 173 [2024-11-28 02:12:51,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:51,923 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 226 transitions. [2024-11-28 02:12:51,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:12:51,923 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 226 transitions. [2024-11-28 02:12:51,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-28 02:12:51,927 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:51,927 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:51,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:12:51,927 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:51,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:51,928 INFO L85 PathProgramCache]: Analyzing trace with hash 877172961, now seen corresponding path program 1 times [2024-11-28 02:12:51,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:51,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614841557] [2024-11-28 02:12:51,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:51,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:12:52,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:52,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614841557] [2024-11-28 02:12:52,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614841557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:52,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:52,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:12:52,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912374388] [2024-11-28 02:12:52,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:52,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:12:52,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:52,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:12:52,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:12:52,529 INFO L87 Difference]: Start difference. First operand 146 states and 226 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:12:52,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:52,820 INFO L93 Difference]: Finished difference Result 274 states and 423 transitions. [2024-11-28 02:12:52,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:12:52,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 174 [2024-11-28 02:12:52,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:52,824 INFO L225 Difference]: With dead ends: 274 [2024-11-28 02:12:52,824 INFO L226 Difference]: Without dead ends: 184 [2024-11-28 02:12:52,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:12:52,826 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 94 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:52,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 387 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:12:52,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-28 02:12:52,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 147. [2024-11-28 02:12:52,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 92 states have (on average 1.3369565217391304) internal successors, (123), 92 states have internal predecessors, (123), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-28 02:12:52,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 227 transitions. [2024-11-28 02:12:52,865 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 227 transitions. Word has length 174 [2024-11-28 02:12:52,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:52,867 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 227 transitions. [2024-11-28 02:12:52,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:12:52,868 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 227 transitions. [2024-11-28 02:12:52,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-28 02:12:52,875 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:52,875 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:52,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:12:52,876 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:52,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:52,876 INFO L85 PathProgramCache]: Analyzing trace with hash -299913080, now seen corresponding path program 1 times [2024-11-28 02:12:52,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:52,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118036482] [2024-11-28 02:12:52,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:52,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:12:53,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:53,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118036482] [2024-11-28 02:12:53,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118036482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:53,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:53,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:12:53,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211817731] [2024-11-28 02:12:53,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:53,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:12:53,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:53,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:12:53,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:12:53,933 INFO L87 Difference]: Start difference. First operand 147 states and 227 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-28 02:12:54,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:54,740 INFO L93 Difference]: Finished difference Result 327 states and 494 transitions. [2024-11-28 02:12:54,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:12:54,742 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 175 [2024-11-28 02:12:54,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:54,745 INFO L225 Difference]: With dead ends: 327 [2024-11-28 02:12:54,745 INFO L226 Difference]: Without dead ends: 237 [2024-11-28 02:12:54,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:12:54,747 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 409 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:54,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 832 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:12:54,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-28 02:12:54,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 197. [2024-11-28 02:12:54,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 137 states have (on average 1.3576642335766422) internal successors, (186), 138 states have internal predecessors, (186), 55 states have call successors, (55), 4 states have call predecessors, (55), 4 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2024-11-28 02:12:54,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 296 transitions. [2024-11-28 02:12:54,817 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 296 transitions. Word has length 175 [2024-11-28 02:12:54,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:54,818 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 296 transitions. [2024-11-28 02:12:54,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-28 02:12:54,819 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 296 transitions. [2024-11-28 02:12:54,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-28 02:12:54,823 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:54,824 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:54,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:12:54,824 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:54,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:54,824 INFO L85 PathProgramCache]: Analyzing trace with hash -886719094, now seen corresponding path program 1 times [2024-11-28 02:12:54,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:54,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023713372] [2024-11-28 02:12:54,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:54,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:12:55,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:55,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023713372] [2024-11-28 02:12:55,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023713372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:55,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:55,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:12:55,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737481089] [2024-11-28 02:12:55,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:55,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:12:55,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:55,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:12:55,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:12:55,287 INFO L87 Difference]: Start difference. First operand 197 states and 296 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:12:55,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:55,530 INFO L93 Difference]: Finished difference Result 374 states and 564 transitions. [2024-11-28 02:12:55,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:12:55,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-11-28 02:12:55,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:55,535 INFO L225 Difference]: With dead ends: 374 [2024-11-28 02:12:55,535 INFO L226 Difference]: Without dead ends: 233 [2024-11-28 02:12:55,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:12:55,536 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 119 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:55,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 417 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:12:55,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-28 02:12:55,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 208. [2024-11-28 02:12:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 148 states have (on average 1.3513513513513513) internal successors, (200), 149 states have internal predecessors, (200), 55 states have call successors, (55), 4 states have call predecessors, (55), 4 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2024-11-28 02:12:55,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 310 transitions. [2024-11-28 02:12:55,574 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 310 transitions. Word has length 175 [2024-11-28 02:12:55,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:55,574 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 310 transitions. [2024-11-28 02:12:55,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:12:55,575 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 310 transitions. [2024-11-28 02:12:55,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-28 02:12:55,580 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:55,580 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:55,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:12:55,580 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:55,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:55,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1163257374, now seen corresponding path program 1 times [2024-11-28 02:12:55,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:55,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842124502] [2024-11-28 02:12:55,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:55,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:56,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:12:56,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:56,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842124502] [2024-11-28 02:12:56,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842124502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:56,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:56,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:12:56,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316132926] [2024-11-28 02:12:56,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:56,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:12:56,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:56,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:12:56,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:12:56,014 INFO L87 Difference]: Start difference. First operand 208 states and 310 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:12:56,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:56,360 INFO L93 Difference]: Finished difference Result 507 states and 755 transitions. [2024-11-28 02:12:56,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:12:56,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-28 02:12:56,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:56,365 INFO L225 Difference]: With dead ends: 507 [2024-11-28 02:12:56,367 INFO L226 Difference]: Without dead ends: 371 [2024-11-28 02:12:56,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:12:56,368 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 180 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:56,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 600 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:12:56,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-28 02:12:56,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 315. [2024-11-28 02:12:56,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 224 states have (on average 1.3258928571428572) internal successors, (297), 226 states have internal predecessors, (297), 84 states have call successors, (84), 6 states have call predecessors, (84), 6 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-28 02:12:56,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 465 transitions. [2024-11-28 02:12:56,442 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 465 transitions. Word has length 176 [2024-11-28 02:12:56,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:56,444 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 465 transitions. [2024-11-28 02:12:56,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:12:56,445 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 465 transitions. [2024-11-28 02:12:56,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-28 02:12:56,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:56,447 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:56,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:12:56,448 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:56,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:56,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1543362020, now seen corresponding path program 1 times [2024-11-28 02:12:56,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:56,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801362821] [2024-11-28 02:12:56,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:56,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:13:02,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:02,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801362821] [2024-11-28 02:13:02,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801362821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:02,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:02,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:13:02,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433587936] [2024-11-28 02:13:02,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:02,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:13:02,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:02,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:13:02,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:13:02,572 INFO L87 Difference]: Start difference. First operand 315 states and 465 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:13:04,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 02:13:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:04,842 INFO L93 Difference]: Finished difference Result 720 states and 1027 transitions. [2024-11-28 02:13:04,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:13:04,843 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-28 02:13:04,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:04,847 INFO L225 Difference]: With dead ends: 720 [2024-11-28 02:13:04,847 INFO L226 Difference]: Without dead ends: 508 [2024-11-28 02:13:04,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:13:04,849 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 187 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:04,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 697 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 02:13:04,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2024-11-28 02:13:04,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 292. [2024-11-28 02:13:04,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 207 states have (on average 1.328502415458937) internal successors, (275), 207 states have internal predecessors, (275), 78 states have call successors, (78), 6 states have call predecessors, (78), 6 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-28 02:13:04,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 431 transitions. [2024-11-28 02:13:04,907 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 431 transitions. Word has length 176 [2024-11-28 02:13:04,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:04,909 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 431 transitions. [2024-11-28 02:13:04,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:13:04,909 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 431 transitions. [2024-11-28 02:13:04,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-28 02:13:04,911 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:04,912 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:04,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:13:04,913 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:04,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:04,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1150335010, now seen corresponding path program 1 times [2024-11-28 02:13:04,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:04,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23680119] [2024-11-28 02:13:04,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:04,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:13:05,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:05,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23680119] [2024-11-28 02:13:05,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23680119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:05,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:05,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:13:05,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901451104] [2024-11-28 02:13:05,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:05,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:13:05,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:05,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:13:05,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:13:05,566 INFO L87 Difference]: Start difference. First operand 292 states and 431 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:13:06,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:06,261 INFO L93 Difference]: Finished difference Result 657 states and 972 transitions. [2024-11-28 02:13:06,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:13:06,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-28 02:13:06,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:06,269 INFO L225 Difference]: With dead ends: 657 [2024-11-28 02:13:06,269 INFO L226 Difference]: Without dead ends: 442 [2024-11-28 02:13:06,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:13:06,274 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 318 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:06,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 663 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:13:06,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2024-11-28 02:13:06,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 295. [2024-11-28 02:13:06,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 210 states have (on average 1.3285714285714285) internal successors, (279), 210 states have internal predecessors, (279), 78 states have call successors, (78), 6 states have call predecessors, (78), 6 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-28 02:13:06,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 435 transitions. [2024-11-28 02:13:06,330 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 435 transitions. Word has length 176 [2024-11-28 02:13:06,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:06,333 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 435 transitions. [2024-11-28 02:13:06,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:13:06,334 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 435 transitions. [2024-11-28 02:13:06,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-28 02:13:06,336 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:06,336 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:06,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:13:06,336 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:06,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:06,339 INFO L85 PathProgramCache]: Analyzing trace with hash 311211748, now seen corresponding path program 1 times [2024-11-28 02:13:06,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:06,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055363730] [2024-11-28 02:13:06,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:06,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:13:06,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:06,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055363730] [2024-11-28 02:13:06,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055363730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:06,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:06,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:13:06,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497545630] [2024-11-28 02:13:06,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:06,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:13:06,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:06,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:13:06,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:13:06,959 INFO L87 Difference]: Start difference. First operand 295 states and 435 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:13:07,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:07,309 INFO L93 Difference]: Finished difference Result 635 states and 919 transitions. [2024-11-28 02:13:07,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:13:07,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-28 02:13:07,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:07,314 INFO L225 Difference]: With dead ends: 635 [2024-11-28 02:13:07,315 INFO L226 Difference]: Without dead ends: 420 [2024-11-28 02:13:07,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:13:07,318 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 109 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:07,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 470 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:13:07,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-11-28 02:13:07,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 379. [2024-11-28 02:13:07,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 271 states have (on average 1.3062730627306274) internal successors, (354), 273 states have internal predecessors, (354), 96 states have call successors, (96), 11 states have call predecessors, (96), 11 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:13:07,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 546 transitions. [2024-11-28 02:13:07,399 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 546 transitions. Word has length 176 [2024-11-28 02:13:07,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:07,400 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 546 transitions. [2024-11-28 02:13:07,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:13:07,400 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 546 transitions. [2024-11-28 02:13:07,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-28 02:13:07,403 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:07,403 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:07,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:13:07,403 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:07,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:07,404 INFO L85 PathProgramCache]: Analyzing trace with hash -81815262, now seen corresponding path program 1 times [2024-11-28 02:13:07,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:07,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508469298] [2024-11-28 02:13:07,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:07,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:12,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:13:12,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:12,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508469298] [2024-11-28 02:13:12,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508469298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:12,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:12,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:13:12,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981754462] [2024-11-28 02:13:12,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:12,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:13:12,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:12,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:13:12,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:13:12,458 INFO L87 Difference]: Start difference. First operand 379 states and 546 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:13:14,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:14,111 INFO L93 Difference]: Finished difference Result 716 states and 1024 transitions. [2024-11-28 02:13:14,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:13:14,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-28 02:13:14,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:14,115 INFO L225 Difference]: With dead ends: 716 [2024-11-28 02:13:14,115 INFO L226 Difference]: Without dead ends: 426 [2024-11-28 02:13:14,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:13:14,118 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 96 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:14,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 627 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 02:13:14,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2024-11-28 02:13:14,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 379. [2024-11-28 02:13:14,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 271 states have (on average 1.3062730627306274) internal successors, (354), 273 states have internal predecessors, (354), 96 states have call successors, (96), 11 states have call predecessors, (96), 11 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:13:14,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 546 transitions. [2024-11-28 02:13:14,196 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 546 transitions. Word has length 176 [2024-11-28 02:13:14,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:14,197 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 546 transitions. [2024-11-28 02:13:14,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:13:14,198 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 546 transitions. [2024-11-28 02:13:14,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-28 02:13:14,201 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:14,201 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:14,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:13:14,201 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:14,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:14,202 INFO L85 PathProgramCache]: Analyzing trace with hash -482546057, now seen corresponding path program 1 times [2024-11-28 02:13:14,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:14,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571539527] [2024-11-28 02:13:14,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:14,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:13:22,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:22,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571539527] [2024-11-28 02:13:22,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571539527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:22,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:22,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 02:13:22,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106687885] [2024-11-28 02:13:22,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:22,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:13:22,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:22,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:13:22,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:13:22,116 INFO L87 Difference]: Start difference. First operand 379 states and 546 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:13:27,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:27,454 INFO L93 Difference]: Finished difference Result 777 states and 1102 transitions. [2024-11-28 02:13:27,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:13:27,455 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-11-28 02:13:27,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:27,459 INFO L225 Difference]: With dead ends: 777 [2024-11-28 02:13:27,459 INFO L226 Difference]: Without dead ends: 487 [2024-11-28 02:13:27,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:13:27,461 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 343 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:27,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 1091 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 02:13:27,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2024-11-28 02:13:27,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 389. [2024-11-28 02:13:27,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 281 states have (on average 1.313167259786477) internal successors, (369), 283 states have internal predecessors, (369), 96 states have call successors, (96), 11 states have call predecessors, (96), 11 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:13:27,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 561 transitions. [2024-11-28 02:13:27,526 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 561 transitions. Word has length 177 [2024-11-28 02:13:27,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:27,526 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 561 transitions. [2024-11-28 02:13:27,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:13:27,528 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 561 transitions. [2024-11-28 02:13:27,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-28 02:13:27,533 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:27,533 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:27,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:13:27,533 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:27,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:27,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1291892683, now seen corresponding path program 1 times [2024-11-28 02:13:27,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:27,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072200601] [2024-11-28 02:13:27,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:27,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:31,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:13:31,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:31,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072200601] [2024-11-28 02:13:31,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072200601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:31,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:31,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 02:13:31,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522895596] [2024-11-28 02:13:31,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:31,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:13:31,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:31,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:13:31,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:13:31,428 INFO L87 Difference]: Start difference. First operand 389 states and 561 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-28 02:13:32,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:32,920 INFO L93 Difference]: Finished difference Result 774 states and 1101 transitions. [2024-11-28 02:13:32,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:13:32,921 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 177 [2024-11-28 02:13:32,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:32,924 INFO L225 Difference]: With dead ends: 774 [2024-11-28 02:13:32,925 INFO L226 Difference]: Without dead ends: 484 [2024-11-28 02:13:32,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-28 02:13:32,927 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 446 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:32,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 871 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:13:32,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2024-11-28 02:13:32,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 396. [2024-11-28 02:13:32,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 288 states have (on average 1.3125) internal successors, (378), 290 states have internal predecessors, (378), 96 states have call successors, (96), 11 states have call predecessors, (96), 11 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:13:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 570 transitions. [2024-11-28 02:13:32,996 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 570 transitions. Word has length 177 [2024-11-28 02:13:32,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:32,997 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 570 transitions. [2024-11-28 02:13:32,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-28 02:13:32,997 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 570 transitions. [2024-11-28 02:13:33,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-28 02:13:33,000 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:33,000 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:33,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:13:33,001 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:33,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:33,002 INFO L85 PathProgramCache]: Analyzing trace with hash -24498825, now seen corresponding path program 1 times [2024-11-28 02:13:33,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:33,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845413065] [2024-11-28 02:13:33,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:33,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:13:34,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:34,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845413065] [2024-11-28 02:13:34,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845413065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:34,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:34,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:13:34,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930508076] [2024-11-28 02:13:34,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:34,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:13:34,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:34,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:13:34,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:13:34,321 INFO L87 Difference]: Start difference. First operand 396 states and 570 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:13:36,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:36,333 INFO L93 Difference]: Finished difference Result 870 states and 1247 transitions. [2024-11-28 02:13:36,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:13:36,334 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-11-28 02:13:36,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:36,338 INFO L225 Difference]: With dead ends: 870 [2024-11-28 02:13:36,338 INFO L226 Difference]: Without dead ends: 574 [2024-11-28 02:13:36,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:13:36,340 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 349 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:36,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 904 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 02:13:36,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2024-11-28 02:13:36,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 528. [2024-11-28 02:13:36,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 362 states have (on average 1.270718232044199) internal successors, (460), 366 states have internal predecessors, (460), 148 states have call successors, (148), 17 states have call predecessors, (148), 17 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-28 02:13:36,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 756 transitions. [2024-11-28 02:13:36,444 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 756 transitions. Word has length 177 [2024-11-28 02:13:36,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:36,444 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 756 transitions. [2024-11-28 02:13:36,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:13:36,444 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 756 transitions. [2024-11-28 02:13:36,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-28 02:13:36,448 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:36,449 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:36,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:13:36,449 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:36,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:36,450 INFO L85 PathProgramCache]: Analyzing trace with hash 676565753, now seen corresponding path program 1 times [2024-11-28 02:13:36,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:36,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581417928] [2024-11-28 02:13:36,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:36,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:40,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:13:40,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:40,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581417928] [2024-11-28 02:13:40,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581417928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:40,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:40,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 02:13:40,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357618867] [2024-11-28 02:13:40,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:40,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:13:40,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:40,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:13:40,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:13:40,687 INFO L87 Difference]: Start difference. First operand 528 states and 756 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:13:42,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:42,866 INFO L93 Difference]: Finished difference Result 1115 states and 1559 transitions. [2024-11-28 02:13:42,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:13:42,867 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-11-28 02:13:42,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:42,871 INFO L225 Difference]: With dead ends: 1115 [2024-11-28 02:13:42,872 INFO L226 Difference]: Without dead ends: 768 [2024-11-28 02:13:42,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:13:42,874 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 286 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:42,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 485 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:13:42,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2024-11-28 02:13:42,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 553. [2024-11-28 02:13:42,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 387 states have (on average 1.2945736434108528) internal successors, (501), 391 states have internal predecessors, (501), 148 states have call successors, (148), 17 states have call predecessors, (148), 17 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-28 02:13:42,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 797 transitions. [2024-11-28 02:13:42,979 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 797 transitions. Word has length 177 [2024-11-28 02:13:42,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:42,979 INFO L471 AbstractCegarLoop]: Abstraction has 553 states and 797 transitions. [2024-11-28 02:13:42,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:13:42,980 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 797 transitions. [2024-11-28 02:13:42,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-28 02:13:42,983 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:42,984 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:42,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:13:42,984 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:42,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:42,985 INFO L85 PathProgramCache]: Analyzing trace with hash -132780873, now seen corresponding path program 1 times [2024-11-28 02:13:42,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:42,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263358806] [2024-11-28 02:13:42,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:42,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:13:46,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:46,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263358806] [2024-11-28 02:13:46,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263358806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:46,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:46,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:13:46,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359413386] [2024-11-28 02:13:46,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:46,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:13:46,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:46,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:13:46,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:13:46,793 INFO L87 Difference]: Start difference. First operand 553 states and 797 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:13:49,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:49,796 INFO L93 Difference]: Finished difference Result 1038 states and 1487 transitions. [2024-11-28 02:13:49,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:13:49,797 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-11-28 02:13:49,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:49,802 INFO L225 Difference]: With dead ends: 1038 [2024-11-28 02:13:49,802 INFO L226 Difference]: Without dead ends: 669 [2024-11-28 02:13:49,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:13:49,804 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 49 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:49,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 907 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 02:13:49,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-11-28 02:13:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 569. [2024-11-28 02:13:49,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 403 states have (on average 1.2928039702233252) internal successors, (521), 407 states have internal predecessors, (521), 148 states have call successors, (148), 17 states have call predecessors, (148), 17 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-28 02:13:49,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 817 transitions. [2024-11-28 02:13:49,903 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 817 transitions. Word has length 177 [2024-11-28 02:13:49,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:49,903 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 817 transitions. [2024-11-28 02:13:49,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:13:49,904 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 817 transitions. [2024-11-28 02:13:49,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-28 02:13:49,905 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:49,905 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:49,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:13:49,905 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:49,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:49,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1824593308, now seen corresponding path program 1 times [2024-11-28 02:13:49,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:49,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824428654] [2024-11-28 02:13:49,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:49,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:55,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:13:55,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:55,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824428654] [2024-11-28 02:13:55,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824428654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:55,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:55,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 02:13:55,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20704400] [2024-11-28 02:13:55,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:55,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:13:55,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:55,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:13:55,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:13:55,569 INFO L87 Difference]: Start difference. First operand 569 states and 817 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:14:01,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:01,220 INFO L93 Difference]: Finished difference Result 1029 states and 1465 transitions. [2024-11-28 02:14:01,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 02:14:01,221 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 178 [2024-11-28 02:14:01,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:01,225 INFO L225 Difference]: With dead ends: 1029 [2024-11-28 02:14:01,225 INFO L226 Difference]: Without dead ends: 646 [2024-11-28 02:14:01,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=241, Invalid=881, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 02:14:01,227 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 464 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:01,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 1842 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-28 02:14:01,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2024-11-28 02:14:01,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 570. [2024-11-28 02:14:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 404 states have (on average 1.2945544554455446) internal successors, (523), 408 states have internal predecessors, (523), 148 states have call successors, (148), 17 states have call predecessors, (148), 17 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-28 02:14:01,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 819 transitions. [2024-11-28 02:14:01,333 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 819 transitions. Word has length 178 [2024-11-28 02:14:01,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:01,335 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 819 transitions. [2024-11-28 02:14:01,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:14:01,335 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 819 transitions. [2024-11-28 02:14:01,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-28 02:14:01,336 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:01,337 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:14:01,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 02:14:01,337 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:01,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:01,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1015246682, now seen corresponding path program 1 times [2024-11-28 02:14:01,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:01,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52265017] [2024-11-28 02:14:01,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:01,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:14:05,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:05,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52265017] [2024-11-28 02:14:05,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52265017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:05,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:05,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:14:05,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684155468] [2024-11-28 02:14:05,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:05,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:14:05,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:05,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:14:05,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:14:05,909 INFO L87 Difference]: Start difference. First operand 570 states and 819 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:14:08,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:08,785 INFO L93 Difference]: Finished difference Result 1174 states and 1655 transitions. [2024-11-28 02:14:08,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:14:08,786 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 178 [2024-11-28 02:14:08,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:08,789 INFO L225 Difference]: With dead ends: 1174 [2024-11-28 02:14:08,789 INFO L226 Difference]: Without dead ends: 791 [2024-11-28 02:14:08,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:14:08,791 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 106 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:08,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1059 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 02:14:08,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2024-11-28 02:14:08,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 574. [2024-11-28 02:14:08,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 408 states have (on average 1.2965686274509804) internal successors, (529), 412 states have internal predecessors, (529), 148 states have call successors, (148), 17 states have call predecessors, (148), 17 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-28 02:14:08,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 825 transitions. [2024-11-28 02:14:08,895 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 825 transitions. Word has length 178 [2024-11-28 02:14:08,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:08,896 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 825 transitions. [2024-11-28 02:14:08,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:14:08,896 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 825 transitions. [2024-11-28 02:14:08,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-28 02:14:08,897 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:08,897 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:14:08,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:14:08,898 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:08,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:08,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2012326756, now seen corresponding path program 1 times [2024-11-28 02:14:08,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:08,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283939262] [2024-11-28 02:14:08,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:08,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:14:14,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:14,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283939262] [2024-11-28 02:14:14,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283939262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:14,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:14,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:14:14,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808732665] [2024-11-28 02:14:14,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:14,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:14:14,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:14,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:14:14,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:14:14,926 INFO L87 Difference]: Start difference. First operand 574 states and 825 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:14:17,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:17,473 INFO L93 Difference]: Finished difference Result 1253 states and 1789 transitions. [2024-11-28 02:14:17,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:14:17,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 178 [2024-11-28 02:14:17,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:17,497 INFO L225 Difference]: With dead ends: 1253 [2024-11-28 02:14:17,497 INFO L226 Difference]: Without dead ends: 865 [2024-11-28 02:14:17,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:14:17,506 INFO L435 NwaCegarLoop]: 255 mSDtfsCounter, 163 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:17,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 985 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 02:14:17,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2024-11-28 02:14:17,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 577. [2024-11-28 02:14:17,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 411 states have (on average 1.29683698296837) internal successors, (533), 415 states have internal predecessors, (533), 148 states have call successors, (148), 17 states have call predecessors, (148), 17 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-28 02:14:17,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 829 transitions. [2024-11-28 02:14:17,760 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 829 transitions. Word has length 178 [2024-11-28 02:14:17,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:17,762 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 829 transitions. [2024-11-28 02:14:17,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:14:17,766 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 829 transitions. [2024-11-28 02:14:17,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-28 02:14:17,773 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:17,773 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:14:17,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:14:17,774 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:17,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:17,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1311262178, now seen corresponding path program 1 times [2024-11-28 02:14:17,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:17,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361054827] [2024-11-28 02:14:17,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:17,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:14:31,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:31,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361054827] [2024-11-28 02:14:31,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361054827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:31,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:31,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-28 02:14:31,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81720267] [2024-11-28 02:14:31,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:31,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:14:31,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:31,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:14:31,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:14:31,199 INFO L87 Difference]: Start difference. First operand 577 states and 829 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 states have internal predecessors, (51), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-28 02:14:46,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:46,652 INFO L93 Difference]: Finished difference Result 1184 states and 1674 transitions. [2024-11-28 02:14:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 02:14:46,653 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 states have internal predecessors, (51), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 178 [2024-11-28 02:14:46,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:46,659 INFO L225 Difference]: With dead ends: 1184 [2024-11-28 02:14:46,661 INFO L226 Difference]: Without dead ends: 793 [2024-11-28 02:14:46,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 02:14:46,665 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 769 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:46,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1577 Invalid, 2419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2024-11-28 02:14:46,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2024-11-28 02:14:46,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 605. [2024-11-28 02:14:46,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 439 states have (on average 1.3029612756264237) internal successors, (572), 443 states have internal predecessors, (572), 148 states have call successors, (148), 17 states have call predecessors, (148), 17 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-28 02:14:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 868 transitions. [2024-11-28 02:14:46,821 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 868 transitions. Word has length 178 [2024-11-28 02:14:46,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:46,822 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 868 transitions. [2024-11-28 02:14:46,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 states have internal predecessors, (51), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-28 02:14:46,823 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 868 transitions. [2024-11-28 02:14:46,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-28 02:14:46,826 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:46,827 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:14:46,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 02:14:46,827 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:46,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:46,829 INFO L85 PathProgramCache]: Analyzing trace with hash 803524954, now seen corresponding path program 1 times [2024-11-28 02:14:46,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:46,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232527206] [2024-11-28 02:14:46,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:46,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:14:46,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:46,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232527206] [2024-11-28 02:14:46,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232527206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:46,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:46,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:14:46,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638392538] [2024-11-28 02:14:46,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:46,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:14:46,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:46,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:14:46,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:14:46,944 INFO L87 Difference]: Start difference. First operand 605 states and 868 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:14:47,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:47,127 INFO L93 Difference]: Finished difference Result 1271 states and 1830 transitions. [2024-11-28 02:14:47,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:14:47,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 178 [2024-11-28 02:14:47,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:47,134 INFO L225 Difference]: With dead ends: 1271 [2024-11-28 02:14:47,134 INFO L226 Difference]: Without dead ends: 805 [2024-11-28 02:14:47,136 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 [2024-11-28 02:14:47,137 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 124 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:47,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 298 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:14:47,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-11-28 02:14:47,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 605. [2024-11-28 02:14:47,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 439 states have (on average 1.2892938496583144) internal successors, (566), 443 states have internal predecessors, (566), 148 states have call successors, (148), 17 states have call predecessors, (148), 17 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-28 02:14:47,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 862 transitions. [2024-11-28 02:14:47,273 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 862 transitions. Word has length 178 [2024-11-28 02:14:47,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:47,274 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 862 transitions. [2024-11-28 02:14:47,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-28 02:14:47,275 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 862 transitions. [2024-11-28 02:14:47,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-28 02:14:47,278 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:47,279 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:14:47,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 02:14:47,279 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:47,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:47,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1721770043, now seen corresponding path program 1 times [2024-11-28 02:14:47,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:47,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464929813] [2024-11-28 02:14:47,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:47,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:47,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 27 proven. 48 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-11-28 02:14:47,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:47,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464929813] [2024-11-28 02:14:47,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464929813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:14:47,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871028235] [2024-11-28 02:14:47,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:47,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:47,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:14:47,788 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:14:47,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:14:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:47,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:14:48,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:14:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 619 proven. 48 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2024-11-28 02:14:48,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:14:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 27 proven. 48 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-11-28 02:14:48,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871028235] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:14:48,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:14:48,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-28 02:14:48,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890851113] [2024-11-28 02:14:48,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:14:48,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:14:48,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:48,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:14:48,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:14:48,783 INFO L87 Difference]: Start difference. First operand 605 states and 862 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-28 02:14:50,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:50,095 INFO L93 Difference]: Finished difference Result 1162 states and 1637 transitions. [2024-11-28 02:14:50,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 02:14:50,096 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 178 [2024-11-28 02:14:50,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:50,102 INFO L225 Difference]: With dead ends: 1162 [2024-11-28 02:14:50,102 INFO L226 Difference]: Without dead ends: 752 [2024-11-28 02:14:50,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 352 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=562, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:14:50,105 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 339 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:50,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 959 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:14:50,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2024-11-28 02:14:50,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 600. [2024-11-28 02:14:50,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 429 states have (on average 1.268065268065268) internal successors, (544), 433 states have internal predecessors, (544), 148 states have call successors, (148), 22 states have call predecessors, (148), 22 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-28 02:14:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 840 transitions. [2024-11-28 02:14:50,306 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 840 transitions. Word has length 178 [2024-11-28 02:14:50,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:50,309 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 840 transitions. [2024-11-28 02:14:50,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-28 02:14:50,309 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 840 transitions. [2024-11-28 02:14:50,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-28 02:14:50,311 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:50,311 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:14:50,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:14:50,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80e49f9f-9051-4171-902a-061256725ff3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 02:14:50,512 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:50,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:50,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1993444073, now seen corresponding path program 1 times [2024-11-28 02:14:50,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:50,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125218169] [2024-11-28 02:14:50,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:50,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:50,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-28 02:14:50,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:50,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125218169] [2024-11-28 02:14:50,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125218169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:50,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:50,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:14:50,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843496887] [2024-11-28 02:14:50,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:50,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:14:50,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:50,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:14:50,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:14:50,819 INFO L87 Difference]: Start difference. First operand 600 states and 840 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-28 02:14:51,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:51,997 INFO L93 Difference]: Finished difference Result 2257 states and 3188 transitions. [2024-11-28 02:14:51,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:14:51,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 179 [2024-11-28 02:14:51,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:52,008 INFO L225 Difference]: With dead ends: 2257 [2024-11-28 02:14:52,009 INFO L226 Difference]: Without dead ends: 1855 [2024-11-28 02:14:52,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:14:52,014 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 679 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:52,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 807 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:14:52,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2024-11-28 02:14:52,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1510. [2024-11-28 02:14:52,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1059 states have (on average 1.2606232294617563) internal successors, (1335), 1071 states have internal predecessors, (1335), 392 states have call successors, (392), 58 states have call predecessors, (392), 58 states have return successors, (392), 380 states have call predecessors, (392), 392 states have call successors, (392) [2024-11-28 02:14:52,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 2119 transitions. [2024-11-28 02:14:52,405 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 2119 transitions. Word has length 179 [2024-11-28 02:14:52,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:52,408 INFO L471 AbstractCegarLoop]: Abstraction has 1510 states and 2119 transitions. [2024-11-28 02:14:52,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-28 02:14:52,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 2119 transitions. [2024-11-28 02:14:52,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-28 02:14:52,410 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:52,410 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:14:52,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 02:14:52,410 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:52,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:52,411 INFO L85 PathProgramCache]: Analyzing trace with hash -218436711, now seen corresponding path program 1 times [2024-11-28 02:14:52,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:52,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038841932] [2024-11-28 02:14:52,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:52,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat