./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-9.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-9.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3c86227bd3c166c2c8d2c3f7201460a37b3a8cc1b1724af153204475ecb73cc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:36:05,104 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:36:05,235 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:36:05,250 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:36:05,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:36:05,289 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:36:05,290 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:36:05,290 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:36:05,291 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:36:05,291 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:36:05,291 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:36:05,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:36:05,292 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:36:05,292 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:36:05,292 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:36:05,293 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:36:05,293 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:36:05,293 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:36:05,293 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:36:05,293 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:36:05,293 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:36:05,294 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:36:05,296 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:36:05,296 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:36:05,296 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:36:05,296 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:36:05,297 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:36:05,297 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:36:05,297 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:36:05,297 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:36:05,297 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:36:05,297 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:36:05,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:36:05,298 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:36:05,298 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:36:05,298 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:36:05,298 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:36:05,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:36:05,298 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:36:05,298 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:36:05,298 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:36:05,299 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:36:05,299 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:36:05,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:36:05,299 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:36:05,299 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:36:05,299 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:36:05,299 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:36:05,299 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_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3c86227bd3c166c2c8d2c3f7201460a37b3a8cc1b1724af153204475ecb73cc [2024-11-24 00:36:05,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:36:05,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:36:05,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:36:05,749 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:36:05,750 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:36:05,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-9.i [2024-11-24 00:36:09,050 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/data/5fb664290/a19081a845c7455eabf965dc4e5b8434/FLAGafef56f5c [2024-11-24 00:36:09,462 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:36:09,463 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-9.i [2024-11-24 00:36:09,478 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/data/5fb664290/a19081a845c7455eabf965dc4e5b8434/FLAGafef56f5c [2024-11-24 00:36:09,496 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/data/5fb664290/a19081a845c7455eabf965dc4e5b8434 [2024-11-24 00:36:09,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:36:09,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:36:09,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:36:09,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:36:09,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:36:09,509 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:36:09" (1/1) ... [2024-11-24 00:36:09,511 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b8a6f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:09, skipping insertion in model container [2024-11-24 00:36:09,511 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:36:09" (1/1) ... [2024-11-24 00:36:09,550 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:36:09,754 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_124ad894-06cb-4847-9719-ca476fb22a0e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-9.i[915,928] [2024-11-24 00:36:09,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:36:09,927 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:36:09,943 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_124ad894-06cb-4847-9719-ca476fb22a0e/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-9.i[915,928] [2024-11-24 00:36:10,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:36:10,091 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:36:10,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:10 WrapperNode [2024-11-24 00:36:10,092 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:36:10,093 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:36:10,094 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:36:10,094 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:36:10,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:10" (1/1) ... [2024-11-24 00:36:10,121 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:10" (1/1) ... [2024-11-24 00:36:10,199 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 418 [2024-11-24 00:36:10,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:36:10,200 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:36:10,200 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:36:10,200 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:36:10,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:10" (1/1) ... [2024-11-24 00:36:10,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:10" (1/1) ... [2024-11-24 00:36:10,222 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:10" (1/1) ... [2024-11-24 00:36:10,263 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 00:36:10,263 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:10" (1/1) ... [2024-11-24 00:36:10,264 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:10" (1/1) ... [2024-11-24 00:36:10,288 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:10" (1/1) ... [2024-11-24 00:36:10,290 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:10" (1/1) ... [2024-11-24 00:36:10,302 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:10" (1/1) ... [2024-11-24 00:36:10,314 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:10" (1/1) ... [2024-11-24 00:36:10,317 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:10" (1/1) ... [2024-11-24 00:36:10,333 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:36:10,335 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:36:10,336 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:36:10,336 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:36:10,337 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:10" (1/1) ... [2024-11-24 00:36:10,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:36:10,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:36:10,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:36:10,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:36:10,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:36:10,424 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:36:10,424 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:36:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:36:10,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:36:10,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:36:10,592 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:36:10,594 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:36:11,902 INFO L? ?]: Removed 52 outVars from TransFormulas that were not future-live. [2024-11-24 00:36:11,902 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:36:11,923 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:36:11,923 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:36:11,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:36:11 BoogieIcfgContainer [2024-11-24 00:36:11,924 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:36:11,926 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:36:11,927 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:36:11,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:36:11,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:36:09" (1/3) ... [2024-11-24 00:36:11,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8dfd89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:36:11, skipping insertion in model container [2024-11-24 00:36:11,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:36:10" (2/3) ... [2024-11-24 00:36:11,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8dfd89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:36:11, skipping insertion in model container [2024-11-24 00:36:11,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:36:11" (3/3) ... [2024-11-24 00:36:11,936 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-9.i [2024-11-24 00:36:11,954 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:36:11,958 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-9.i that has 2 procedures, 177 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:36:12,058 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:36:12,079 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;@1c80d09d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:36:12,080 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:36:12,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 126 states have (on average 1.5158730158730158) internal successors, (191), 127 states have internal predecessors, (191), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-24 00:36:12,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-24 00:36:12,111 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:36:12,112 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:36:12,112 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:36:12,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:36:12,119 INFO L85 PathProgramCache]: Analyzing trace with hash -361009679, now seen corresponding path program 1 times [2024-11-24 00:36:12,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:36:12,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217194916] [2024-11-24 00:36:12,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:12,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:36:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:13,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2024-11-24 00:36:13,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:36:13,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217194916] [2024-11-24 00:36:13,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217194916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:36:13,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212294236] [2024-11-24 00:36:13,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:13,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:36:13,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:36:13,031 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:36:13,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:36:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:13,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:36:13,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:36:13,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2024-11-24 00:36:13,577 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:36:13,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212294236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:36:13,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:36:13,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 00:36:13,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917923573] [2024-11-24 00:36:13,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:36:13,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:36:13,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:36:13,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:36:13,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:36:13,640 INFO L87 Difference]: Start difference. First operand has 177 states, 126 states have (on average 1.5158730158730158) internal successors, (191), 127 states have internal predecessors, (191), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-24 00:36:13,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:36:13,712 INFO L93 Difference]: Finished difference Result 347 states and 616 transitions. [2024-11-24 00:36:13,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:36:13,714 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 312 [2024-11-24 00:36:13,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:36:13,725 INFO L225 Difference]: With dead ends: 347 [2024-11-24 00:36:13,725 INFO L226 Difference]: Without dead ends: 173 [2024-11-24 00:36:13,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:36:13,738 INFO L435 NwaCegarLoop]: 280 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, 280 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:36:13,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:36:13,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-24 00:36:13,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-11-24 00:36:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 123 states have (on average 1.4959349593495934) internal successors, (184), 123 states have internal predecessors, (184), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-24 00:36:13,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 280 transitions. [2024-11-24 00:36:13,830 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 280 transitions. Word has length 312 [2024-11-24 00:36:13,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:36:13,831 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 280 transitions. [2024-11-24 00:36:13,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-11-24 00:36:13,832 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 280 transitions. [2024-11-24 00:36:13,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-24 00:36:13,852 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:36:13,852 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:36:13,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 00:36:14,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:36:14,054 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:36:14,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:36:14,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1622792027, now seen corresponding path program 1 times [2024-11-24 00:36:14,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:36:14,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127030645] [2024-11-24 00:36:14,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:14,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:36:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-24 00:36:14,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:36:14,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127030645] [2024-11-24 00:36:14,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127030645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:36:14,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:36:14,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:36:14,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336569798] [2024-11-24 00:36:14,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:36:14,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:36:14,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:36:14,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:36:14,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:36:14,775 INFO L87 Difference]: Start difference. First operand 173 states and 280 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:36:14,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:36:14,948 INFO L93 Difference]: Finished difference Result 476 states and 771 transitions. [2024-11-24 00:36:14,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:36:14,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 312 [2024-11-24 00:36:14,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:36:14,960 INFO L225 Difference]: With dead ends: 476 [2024-11-24 00:36:14,960 INFO L226 Difference]: Without dead ends: 306 [2024-11-24 00:36:14,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:36:14,968 INFO L435 NwaCegarLoop]: 303 mSDtfsCounter, 214 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:36:14,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 566 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:36:14,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-24 00:36:15,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 303. [2024-11-24 00:36:15,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 216 states have (on average 1.4907407407407407) internal successors, (322), 217 states have internal predecessors, (322), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 83 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-24 00:36:15,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 490 transitions. [2024-11-24 00:36:15,050 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 490 transitions. Word has length 312 [2024-11-24 00:36:15,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:36:15,053 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 490 transitions. [2024-11-24 00:36:15,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:36:15,054 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 490 transitions. [2024-11-24 00:36:15,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2024-11-24 00:36:15,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:36:15,066 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:36:15,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:36:15,066 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:36:15,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:36:15,067 INFO L85 PathProgramCache]: Analyzing trace with hash -921192153, now seen corresponding path program 1 times [2024-11-24 00:36:15,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:36:15,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165274626] [2024-11-24 00:36:15,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:15,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:36:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:15,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-24 00:36:15,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:36:15,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165274626] [2024-11-24 00:36:15,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165274626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:36:15,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:36:15,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:36:15,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182021185] [2024-11-24 00:36:15,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:36:15,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:36:15,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:36:15,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:36:15,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:36:15,653 INFO L87 Difference]: Start difference. First operand 303 states and 490 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:36:15,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:36:15,789 INFO L93 Difference]: Finished difference Result 610 states and 982 transitions. [2024-11-24 00:36:15,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:36:15,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 312 [2024-11-24 00:36:15,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:36:15,795 INFO L225 Difference]: With dead ends: 610 [2024-11-24 00:36:15,799 INFO L226 Difference]: Without dead ends: 310 [2024-11-24 00:36:15,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:36:15,802 INFO L435 NwaCegarLoop]: 456 mSDtfsCounter, 200 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:36:15,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 721 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:36:15,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-24 00:36:15,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 196. [2024-11-24 00:36:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 145 states have (on average 1.4827586206896552) internal successors, (215), 145 states have internal predecessors, (215), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-24 00:36:15,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 311 transitions. [2024-11-24 00:36:15,857 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 311 transitions. Word has length 312 [2024-11-24 00:36:15,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:36:15,858 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 311 transitions. [2024-11-24 00:36:15,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:36:15,859 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 311 transitions. [2024-11-24 00:36:15,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-11-24 00:36:15,869 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:36:15,869 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:36:15,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:36:15,870 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:36:15,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:36:15,871 INFO L85 PathProgramCache]: Analyzing trace with hash -148858346, now seen corresponding path program 1 times [2024-11-24 00:36:15,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:36:15,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770013035] [2024-11-24 00:36:15,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:15,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:36:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-24 00:36:16,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:36:16,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770013035] [2024-11-24 00:36:16,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770013035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:36:16,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:36:16,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:36:16,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840649178] [2024-11-24 00:36:16,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:36:16,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:36:16,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:36:16,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:36:16,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:36:16,396 INFO L87 Difference]: Start difference. First operand 196 states and 311 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:36:16,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:36:16,542 INFO L93 Difference]: Finished difference Result 582 states and 927 transitions. [2024-11-24 00:36:16,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:36:16,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 313 [2024-11-24 00:36:16,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:36:16,550 INFO L225 Difference]: With dead ends: 582 [2024-11-24 00:36:16,551 INFO L226 Difference]: Without dead ends: 389 [2024-11-24 00:36:16,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:36:16,553 INFO L435 NwaCegarLoop]: 489 mSDtfsCounter, 246 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:36:16,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 749 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:36:16,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-11-24 00:36:16,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 248. [2024-11-24 00:36:16,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 197 states have (on average 1.5076142131979695) internal successors, (297), 197 states have internal predecessors, (297), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-24 00:36:16,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 393 transitions. [2024-11-24 00:36:16,579 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 393 transitions. Word has length 313 [2024-11-24 00:36:16,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:36:16,580 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 393 transitions. [2024-11-24 00:36:16,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:36:16,580 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 393 transitions. [2024-11-24 00:36:16,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-24 00:36:16,585 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:36:16,585 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:36:16,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:36:16,586 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:36:16,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:36:16,586 INFO L85 PathProgramCache]: Analyzing trace with hash 523430973, now seen corresponding path program 1 times [2024-11-24 00:36:16,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:36:16,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133096833] [2024-11-24 00:36:16,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:16,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:36:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:17,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-24 00:36:17,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:36:17,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133096833] [2024-11-24 00:36:17,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133096833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:36:17,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:36:17,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:36:17,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777589605] [2024-11-24 00:36:17,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:36:17,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:36:17,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:36:17,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:36:17,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:36:17,869 INFO L87 Difference]: Start difference. First operand 248 states and 393 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:36:18,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:36:18,478 INFO L93 Difference]: Finished difference Result 672 states and 1065 transitions. [2024-11-24 00:36:18,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:36:18,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 314 [2024-11-24 00:36:18,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:36:18,484 INFO L225 Difference]: With dead ends: 672 [2024-11-24 00:36:18,485 INFO L226 Difference]: Without dead ends: 427 [2024-11-24 00:36:18,486 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 [2024-11-24 00:36:18,486 INFO L435 NwaCegarLoop]: 459 mSDtfsCounter, 324 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:36:18,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 907 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:36:18,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-24 00:36:18,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 260. [2024-11-24 00:36:18,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 209 states have (on average 1.492822966507177) internal successors, (312), 209 states have internal predecessors, (312), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-24 00:36:18,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 408 transitions. [2024-11-24 00:36:18,524 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 408 transitions. Word has length 314 [2024-11-24 00:36:18,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:36:18,527 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 408 transitions. [2024-11-24 00:36:18,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:36:18,528 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 408 transitions. [2024-11-24 00:36:18,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-24 00:36:18,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:36:18,536 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:36:18,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:36:18,537 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:36:18,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:36:18,539 INFO L85 PathProgramCache]: Analyzing trace with hash -898599897, now seen corresponding path program 1 times [2024-11-24 00:36:18,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:36:18,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372235369] [2024-11-24 00:36:18,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:18,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:36:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:20,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-24 00:36:20,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:36:20,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372235369] [2024-11-24 00:36:20,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372235369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:36:20,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:36:20,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:36:20,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401134856] [2024-11-24 00:36:20,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:36:20,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:36:20,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:36:20,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:36:20,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:36:20,560 INFO L87 Difference]: Start difference. First operand 260 states and 408 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:36:21,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:36:21,048 INFO L93 Difference]: Finished difference Result 705 states and 1110 transitions. [2024-11-24 00:36:21,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:36:21,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 314 [2024-11-24 00:36:21,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:36:21,057 INFO L225 Difference]: With dead ends: 705 [2024-11-24 00:36:21,057 INFO L226 Difference]: Without dead ends: 448 [2024-11-24 00:36:21,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:36:21,059 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 249 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:36:21,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1294 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:36:21,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2024-11-24 00:36:21,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 433. [2024-11-24 00:36:21,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 349 states have (on average 1.484240687679083) internal successors, (518), 350 states have internal predecessors, (518), 80 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 79 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-24 00:36:21,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 678 transitions. [2024-11-24 00:36:21,109 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 678 transitions. Word has length 314 [2024-11-24 00:36:21,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:36:21,112 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 678 transitions. [2024-11-24 00:36:21,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:36:21,113 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 678 transitions. [2024-11-24 00:36:21,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-24 00:36:21,120 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:36:21,121 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:36:21,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:36:21,121 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:36:21,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:36:21,122 INFO L85 PathProgramCache]: Analyzing trace with hash 487603497, now seen corresponding path program 1 times [2024-11-24 00:36:21,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:36:21,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26388132] [2024-11-24 00:36:21,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:21,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:36:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-24 00:36:39,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:36:39,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26388132] [2024-11-24 00:36:39,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26388132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:36:39,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:36:39,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:36:39,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613943353] [2024-11-24 00:36:39,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:36:39,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:36:39,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:36:39,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:36:39,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:36:39,840 INFO L87 Difference]: Start difference. First operand 433 states and 678 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:36:42,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:36:42,020 INFO L93 Difference]: Finished difference Result 1267 states and 1962 transitions. [2024-11-24 00:36:42,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:36:42,021 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 314 [2024-11-24 00:36:42,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:36:42,030 INFO L225 Difference]: With dead ends: 1267 [2024-11-24 00:36:42,030 INFO L226 Difference]: Without dead ends: 837 [2024-11-24 00:36:42,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:36:42,035 INFO L435 NwaCegarLoop]: 282 mSDtfsCounter, 627 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:36:42,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 1005 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 00:36:42,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2024-11-24 00:36:42,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 676. [2024-11-24 00:36:42,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 580 states have (on average 1.5034482758620689) internal successors, (872), 584 states have internal predecessors, (872), 88 states have call successors, (88), 7 states have call predecessors, (88), 7 states have return successors, (88), 84 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-24 00:36:42,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1048 transitions. [2024-11-24 00:36:42,157 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1048 transitions. Word has length 314 [2024-11-24 00:36:42,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:36:42,160 INFO L471 AbstractCegarLoop]: Abstraction has 676 states and 1048 transitions. [2024-11-24 00:36:42,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:36:42,161 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1048 transitions. [2024-11-24 00:36:42,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-11-24 00:36:42,166 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:36:42,167 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:36:42,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:36:42,167 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:36:42,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:36:42,168 INFO L85 PathProgramCache]: Analyzing trace with hash -38841129, now seen corresponding path program 1 times [2024-11-24 00:36:42,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:36:42,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470022570] [2024-11-24 00:36:42,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:42,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:36:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-24 00:36:59,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:36:59,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470022570] [2024-11-24 00:36:59,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470022570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:36:59,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:36:59,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 00:36:59,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195070970] [2024-11-24 00:36:59,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:36:59,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:36:59,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:36:59,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:36:59,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:36:59,640 INFO L87 Difference]: Start difference. First operand 676 states and 1048 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:37:02,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:37:02,163 INFO L93 Difference]: Finished difference Result 1650 states and 2545 transitions. [2024-11-24 00:37:02,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:37:02,164 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 315 [2024-11-24 00:37:02,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:37:02,172 INFO L225 Difference]: With dead ends: 1650 [2024-11-24 00:37:02,172 INFO L226 Difference]: Without dead ends: 984 [2024-11-24 00:37:02,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:37:02,175 INFO L435 NwaCegarLoop]: 337 mSDtfsCounter, 557 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:37:02,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 1131 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-24 00:37:02,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2024-11-24 00:37:02,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 822. [2024-11-24 00:37:02,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 714 states have (on average 1.5126050420168067) internal successors, (1080), 720 states have internal predecessors, (1080), 96 states have call successors, (96), 11 states have call predecessors, (96), 11 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-24 00:37:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1272 transitions. [2024-11-24 00:37:02,306 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1272 transitions. Word has length 315 [2024-11-24 00:37:02,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:37:02,307 INFO L471 AbstractCegarLoop]: Abstraction has 822 states and 1272 transitions. [2024-11-24 00:37:02,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:37:02,308 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1272 transitions. [2024-11-24 00:37:02,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-11-24 00:37:02,312 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:37:02,313 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:37:02,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:37:02,314 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:37:02,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:37:02,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1627908680, now seen corresponding path program 1 times [2024-11-24 00:37:02,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:37:02,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941702458] [2024-11-24 00:37:02,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:37:02,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:37:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:37:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-24 00:37:02,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:37:02,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941702458] [2024-11-24 00:37:02,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941702458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:37:02,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:37:02,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:37:02,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476515257] [2024-11-24 00:37:02,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:37:02,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:37:02,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:37:02,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:37:02,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:37:02,601 INFO L87 Difference]: Start difference. First operand 822 states and 1272 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:37:02,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:37:02,789 INFO L93 Difference]: Finished difference Result 1688 states and 2625 transitions. [2024-11-24 00:37:02,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:37:02,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 315 [2024-11-24 00:37:02,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:37:02,797 INFO L225 Difference]: With dead ends: 1688 [2024-11-24 00:37:02,797 INFO L226 Difference]: Without dead ends: 876 [2024-11-24 00:37:02,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:37:02,801 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 71 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:37:02,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 524 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:37:02,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2024-11-24 00:37:02,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 822. [2024-11-24 00:37:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 714 states have (on average 1.5014005602240896) internal successors, (1072), 720 states have internal predecessors, (1072), 96 states have call successors, (96), 11 states have call predecessors, (96), 11 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-24 00:37:02,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1264 transitions. [2024-11-24 00:37:02,923 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1264 transitions. Word has length 315 [2024-11-24 00:37:02,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:37:02,924 INFO L471 AbstractCegarLoop]: Abstraction has 822 states and 1264 transitions. [2024-11-24 00:37:02,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:37:02,926 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1264 transitions. [2024-11-24 00:37:02,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-11-24 00:37:02,930 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:37:02,930 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:37:02,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:37:02,930 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:37:02,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:37:02,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1768457290, now seen corresponding path program 1 times [2024-11-24 00:37:02,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:37:02,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567282861] [2024-11-24 00:37:02,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:37:02,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:37:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:37:17,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-24 00:37:17,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:37:17,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567282861] [2024-11-24 00:37:17,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567282861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:37:17,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:37:17,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 00:37:17,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627836253] [2024-11-24 00:37:17,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:37:17,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:37:17,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:37:17,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:37:17,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:37:17,681 INFO L87 Difference]: Start difference. First operand 822 states and 1264 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:37:20,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:37:20,504 INFO L93 Difference]: Finished difference Result 2046 states and 3137 transitions. [2024-11-24 00:37:20,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:37:20,507 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 315 [2024-11-24 00:37:20,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:37:20,515 INFO L225 Difference]: With dead ends: 2046 [2024-11-24 00:37:20,515 INFO L226 Difference]: Without dead ends: 1234 [2024-11-24 00:37:20,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:37:20,518 INFO L435 NwaCegarLoop]: 374 mSDtfsCounter, 416 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:37:20,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 1540 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 00:37:20,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2024-11-24 00:37:20,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 964. [2024-11-24 00:37:20,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 856 states have (on average 1.4988317757009346) internal successors, (1283), 862 states have internal predecessors, (1283), 96 states have call successors, (96), 11 states have call predecessors, (96), 11 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-24 00:37:20,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1475 transitions. [2024-11-24 00:37:20,628 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1475 transitions. Word has length 315 [2024-11-24 00:37:20,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:37:20,628 INFO L471 AbstractCegarLoop]: Abstraction has 964 states and 1475 transitions. [2024-11-24 00:37:20,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:37:20,629 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1475 transitions. [2024-11-24 00:37:20,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-11-24 00:37:20,632 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:37:20,632 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:37:20,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:37:20,633 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:37:20,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:37:20,633 INFO L85 PathProgramCache]: Analyzing trace with hash -482172735, now seen corresponding path program 1 times [2024-11-24 00:37:20,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:37:20,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272563945] [2024-11-24 00:37:20,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:37:20,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:37:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:37:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 84 proven. 57 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2024-11-24 00:37:21,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:37:21,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272563945] [2024-11-24 00:37:21,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272563945] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:37:21,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446280111] [2024-11-24 00:37:21,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:37:21,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:37:21,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:37:21,535 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:37:21,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:37:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:37:21,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:37:21,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:37:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 2231 proven. 57 refuted. 0 times theorem prover too weak. 2224 trivial. 0 not checked. [2024-11-24 00:37:22,165 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:37:22,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 84 proven. 57 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2024-11-24 00:37:22,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446280111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:37:22,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:37:22,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-24 00:37:22,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922742478] [2024-11-24 00:37:22,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:37:22,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:37:22,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:37:22,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:37:22,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:37:22,562 INFO L87 Difference]: Start difference. First operand 964 states and 1475 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 3 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2024-11-24 00:37:23,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:37:23,022 INFO L93 Difference]: Finished difference Result 1932 states and 2948 transitions. [2024-11-24 00:37:23,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:37:23,023 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 3 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) Word has length 316 [2024-11-24 00:37:23,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:37:23,028 INFO L225 Difference]: With dead ends: 1932 [2024-11-24 00:37:23,028 INFO L226 Difference]: Without dead ends: 978 [2024-11-24 00:37:23,030 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 629 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:37:23,031 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 339 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:37:23,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 565 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:37:23,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2024-11-24 00:37:23,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 972. [2024-11-24 00:37:23,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 862 states have (on average 1.4930394431554523) internal successors, (1287), 868 states have internal predecessors, (1287), 96 states have call successors, (96), 13 states have call predecessors, (96), 13 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-24 00:37:23,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1479 transitions. [2024-11-24 00:37:23,136 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1479 transitions. Word has length 316 [2024-11-24 00:37:23,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:37:23,137 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1479 transitions. [2024-11-24 00:37:23,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 3 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 3 states have call predecessors, (87), 3 states have call successors, (87) [2024-11-24 00:37:23,138 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1479 transitions. [2024-11-24 00:37:23,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-11-24 00:37:23,142 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:37:23,142 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:37:23,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:37:23,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:37:23,343 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:37:23,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:37:23,343 INFO L85 PathProgramCache]: Analyzing trace with hash -207413121, now seen corresponding path program 1 times [2024-11-24 00:37:23,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:37:23,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230637470] [2024-11-24 00:37:23,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:37:23,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:37:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:37:25,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 21 proven. 255 refuted. 0 times theorem prover too weak. 4236 trivial. 0 not checked. [2024-11-24 00:37:25,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:37:25,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230637470] [2024-11-24 00:37:25,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230637470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:37:25,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476870637] [2024-11-24 00:37:25,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:37:25,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:37:25,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:37:25,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:37:25,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:37:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:37:26,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-24 00:37:26,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:37:30,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1002 proven. 369 refuted. 0 times theorem prover too weak. 3141 trivial. 0 not checked. [2024-11-24 00:37:30,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:37:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 18 proven. 123 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2024-11-24 00:37:31,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476870637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:37:31,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:37:31,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 6] total 21 [2024-11-24 00:37:31,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146901895] [2024-11-24 00:37:31,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:37:31,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 00:37:31,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:37:31,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 00:37:31,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2024-11-24 00:37:31,030 INFO L87 Difference]: Start difference. First operand 972 states and 1479 transitions. Second operand has 21 states, 21 states have (on average 9.380952380952381) internal successors, (197), 20 states have internal predecessors, (197), 7 states have call successors, (144), 5 states have call predecessors, (144), 9 states have return successors, (144), 7 states have call predecessors, (144), 7 states have call successors, (144) [2024-11-24 00:37:33,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:37:33,298 INFO L93 Difference]: Finished difference Result 2937 states and 4435 transitions. [2024-11-24 00:37:33,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-24 00:37:33,299 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.380952380952381) internal successors, (197), 20 states have internal predecessors, (197), 7 states have call successors, (144), 5 states have call predecessors, (144), 9 states have return successors, (144), 7 states have call predecessors, (144), 7 states have call successors, (144) Word has length 316 [2024-11-24 00:37:33,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:37:33,309 INFO L225 Difference]: With dead ends: 2937 [2024-11-24 00:37:33,310 INFO L226 Difference]: Without dead ends: 1975 [2024-11-24 00:37:33,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=296, Invalid=894, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 00:37:33,314 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 843 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:37:33,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 1381 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 00:37:33,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2024-11-24 00:37:33,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1853. [2024-11-24 00:37:33,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1623 states have (on average 1.4682686383240913) internal successors, (2383), 1634 states have internal predecessors, (2383), 192 states have call successors, (192), 37 states have call predecessors, (192), 37 states have return successors, (192), 181 states have call predecessors, (192), 192 states have call successors, (192) [2024-11-24 00:37:33,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 2767 transitions. [2024-11-24 00:37:33,604 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 2767 transitions. Word has length 316 [2024-11-24 00:37:33,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:37:33,606 INFO L471 AbstractCegarLoop]: Abstraction has 1853 states and 2767 transitions. [2024-11-24 00:37:33,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.380952380952381) internal successors, (197), 20 states have internal predecessors, (197), 7 states have call successors, (144), 5 states have call predecessors, (144), 9 states have return successors, (144), 7 states have call predecessors, (144), 7 states have call successors, (144) [2024-11-24 00:37:33,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 2767 transitions. [2024-11-24 00:37:33,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-11-24 00:37:33,610 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:37:33,611 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:37:33,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 00:37:33,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:37:33,815 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:37:33,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:37:33,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1012920790, now seen corresponding path program 1 times [2024-11-24 00:37:33,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:37:33,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126758671] [2024-11-24 00:37:33,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:37:33,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:37:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:37:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-24 00:37:34,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:37:34,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126758671] [2024-11-24 00:37:34,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126758671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:37:34,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:37:34,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:37:34,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430635009] [2024-11-24 00:37:34,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:37:34,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:37:34,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:37:34,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:37:34,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:37:34,044 INFO L87 Difference]: Start difference. First operand 1853 states and 2767 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:37:34,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:37:34,548 INFO L93 Difference]: Finished difference Result 4502 states and 6736 transitions. [2024-11-24 00:37:34,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:37:34,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 316 [2024-11-24 00:37:34,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:37:34,561 INFO L225 Difference]: With dead ends: 4502 [2024-11-24 00:37:34,561 INFO L226 Difference]: Without dead ends: 2663 [2024-11-24 00:37:34,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:37:34,566 INFO L435 NwaCegarLoop]: 274 mSDtfsCounter, 281 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:37:34,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 534 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:37:34,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2024-11-24 00:37:34,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2661. [2024-11-24 00:37:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2661 states, 2322 states have (on average 1.462962962962963) internal successors, (3397), 2338 states have internal predecessors, (3397), 288 states have call successors, (288), 50 states have call predecessors, (288), 50 states have return successors, (288), 272 states have call predecessors, (288), 288 states have call successors, (288) [2024-11-24 00:37:34,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2661 states to 2661 states and 3973 transitions. [2024-11-24 00:37:34,895 INFO L78 Accepts]: Start accepts. Automaton has 2661 states and 3973 transitions. Word has length 316 [2024-11-24 00:37:34,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:37:34,896 INFO L471 AbstractCegarLoop]: Abstraction has 2661 states and 3973 transitions. [2024-11-24 00:37:34,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:37:34,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2661 states and 3973 transitions. [2024-11-24 00:37:34,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-11-24 00:37:34,900 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:37:34,901 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:37:34,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:37:34,902 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:37:34,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:37:34,902 INFO L85 PathProgramCache]: Analyzing trace with hash 2113814216, now seen corresponding path program 1 times [2024-11-24 00:37:34,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:37:34,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451915955] [2024-11-24 00:37:34,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:37:34,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:37:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:37:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-24 00:37:50,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:37:50,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451915955] [2024-11-24 00:37:50,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451915955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:37:50,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:37:50,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 00:37:50,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139148507] [2024-11-24 00:37:50,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:37:50,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:37:50,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:37:50,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:37:50,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:37:50,572 INFO L87 Difference]: Start difference. First operand 2661 states and 3973 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:37:52,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:37:52,847 INFO L93 Difference]: Finished difference Result 5035 states and 7527 transitions. [2024-11-24 00:37:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:37:52,848 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 316 [2024-11-24 00:37:52,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:37:52,862 INFO L225 Difference]: With dead ends: 5035 [2024-11-24 00:37:52,862 INFO L226 Difference]: Without dead ends: 3094 [2024-11-24 00:37:52,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:37:52,866 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 397 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:37:52,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 1230 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 00:37:52,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2024-11-24 00:37:53,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 2740. [2024-11-24 00:37:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2740 states, 2395 states have (on average 1.4705636743215031) internal successors, (3522), 2411 states have internal predecessors, (3522), 292 states have call successors, (292), 52 states have call predecessors, (292), 52 states have return successors, (292), 276 states have call predecessors, (292), 292 states have call successors, (292) [2024-11-24 00:37:53,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 4106 transitions. [2024-11-24 00:37:53,260 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 4106 transitions. Word has length 316 [2024-11-24 00:37:53,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:37:53,261 INFO L471 AbstractCegarLoop]: Abstraction has 2740 states and 4106 transitions. [2024-11-24 00:37:53,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:37:53,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 4106 transitions. [2024-11-24 00:37:53,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-24 00:37:53,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:37:53,264 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:37:53,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:37:53,264 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:37:53,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:37:53,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1841246820, now seen corresponding path program 1 times [2024-11-24 00:37:53,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:37:53,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483654123] [2024-11-24 00:37:53,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:37:53,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:37:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:38:29,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 141 proven. 264 refuted. 0 times theorem prover too weak. 4107 trivial. 0 not checked. [2024-11-24 00:38:29,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:38:29,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483654123] [2024-11-24 00:38:29,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483654123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:38:29,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170248953] [2024-11-24 00:38:29,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:38:29,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:38:29,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:38:29,894 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:38:29,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:38:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:38:30,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-24 00:38:30,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:38:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 2984 proven. 492 refuted. 0 times theorem prover too weak. 1036 trivial. 0 not checked. [2024-11-24 00:38:35,406 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:39:00,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 255 proven. 420 refuted. 0 times theorem prover too weak. 3837 trivial. 0 not checked. [2024-11-24 00:39:00,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170248953] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:39:00,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:39:00,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 24] total 61 [2024-11-24 00:39:00,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140842555] [2024-11-24 00:39:00,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:39:00,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-24 00:39:00,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:00,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-24 00:39:00,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=636, Invalid=3024, Unknown=0, NotChecked=0, Total=3660 [2024-11-24 00:39:00,232 INFO L87 Difference]: Start difference. First operand 2740 states and 4106 transitions. Second operand has 61 states, 55 states have (on average 4.509090909090909) internal successors, (248), 55 states have internal predecessors, (248), 20 states have call successors, (144), 8 states have call predecessors, (144), 17 states have return successors, (144), 17 states have call predecessors, (144), 20 states have call successors, (144) [2024-11-24 00:41:33,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:41:33,931 INFO L93 Difference]: Finished difference Result 46861 states and 70375 transitions. [2024-11-24 00:41:33,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2024-11-24 00:41:33,932 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 55 states have (on average 4.509090909090909) internal successors, (248), 55 states have internal predecessors, (248), 20 states have call successors, (144), 8 states have call predecessors, (144), 17 states have return successors, (144), 17 states have call predecessors, (144), 20 states have call successors, (144) Word has length 317 [2024-11-24 00:41:33,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:41:34,081 INFO L225 Difference]: With dead ends: 46861 [2024-11-24 00:41:34,081 INFO L226 Difference]: Without dead ends: 44135 [2024-11-24 00:41:34,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 965 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43862 ImplicationChecksByTransitivity, 124.7s TimeCoverageRelationStatistics Valid=17310, Invalid=91260, Unknown=0, NotChecked=0, Total=108570 [2024-11-24 00:41:34,254 INFO L435 NwaCegarLoop]: 353 mSDtfsCounter, 15893 mSDsluCounter, 7366 mSDsCounter, 0 mSdLazyCounter, 7759 mSolverCounterSat, 4729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15910 SdHoareTripleChecker+Valid, 7719 SdHoareTripleChecker+Invalid, 12488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4729 IncrementalHoareTripleChecker+Valid, 7759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:41:34,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15910 Valid, 7719 Invalid, 12488 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4729 Valid, 7759 Invalid, 0 Unknown, 0 Unchecked, 37.2s Time] [2024-11-24 00:41:34,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44135 states. [2024-11-24 00:41:37,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44135 to 17945. [2024-11-24 00:41:37,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17945 states, 15891 states have (on average 1.4725945503744258) internal successors, (23401), 16020 states have internal predecessors, (23401), 1612 states have call successors, (1612), 441 states have call predecessors, (1612), 441 states have return successors, (1612), 1483 states have call predecessors, (1612), 1612 states have call successors, (1612) [2024-11-24 00:41:37,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17945 states to 17945 states and 26625 transitions. [2024-11-24 00:41:37,759 INFO L78 Accepts]: Start accepts. Automaton has 17945 states and 26625 transitions. Word has length 317 [2024-11-24 00:41:37,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:41:37,760 INFO L471 AbstractCegarLoop]: Abstraction has 17945 states and 26625 transitions. [2024-11-24 00:41:37,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 55 states have (on average 4.509090909090909) internal successors, (248), 55 states have internal predecessors, (248), 20 states have call successors, (144), 8 states have call predecessors, (144), 17 states have return successors, (144), 17 states have call predecessors, (144), 20 states have call successors, (144) [2024-11-24 00:41:37,761 INFO L276 IsEmpty]: Start isEmpty. Operand 17945 states and 26625 transitions. [2024-11-24 00:41:37,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-24 00:41:37,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:41:37,767 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:41:37,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:41:37,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124ad894-06cb-4847-9719-ca476fb22a0e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:41:37,971 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:41:37,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:41:37,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1553273445, now seen corresponding path program 1 times [2024-11-24 00:41:37,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:41:37,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401417974] [2024-11-24 00:41:37,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:41:37,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:41:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:41:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-24 00:41:38,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:41:38,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401417974] [2024-11-24 00:41:38,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401417974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:41:38,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:41:38,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:41:38,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081459476] [2024-11-24 00:41:38,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:41:38,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:41:38,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:41:38,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:41:38,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:41:38,147 INFO L87 Difference]: Start difference. First operand 17945 states and 26625 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:41:42,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:41:42,569 INFO L93 Difference]: Finished difference Result 42729 states and 64529 transitions. [2024-11-24 00:41:42,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:41:42,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 317 [2024-11-24 00:41:42,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:41:42,640 INFO L225 Difference]: With dead ends: 42729 [2024-11-24 00:41:42,640 INFO L226 Difference]: Without dead ends: 24897 [2024-11-24 00:41:42,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:41:42,667 INFO L435 NwaCegarLoop]: 348 mSDtfsCounter, 110 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:41:42,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 596 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:41:42,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24897 states. [2024-11-24 00:41:46,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24897 to 22935. [2024-11-24 00:41:46,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22935 states, 20881 states have (on average 1.5332120109190173) internal successors, (32015), 21010 states have internal predecessors, (32015), 1612 states have call successors, (1612), 441 states have call predecessors, (1612), 441 states have return successors, (1612), 1483 states have call predecessors, (1612), 1612 states have call successors, (1612) [2024-11-24 00:41:46,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22935 states to 22935 states and 35239 transitions. [2024-11-24 00:41:46,770 INFO L78 Accepts]: Start accepts. Automaton has 22935 states and 35239 transitions. Word has length 317 [2024-11-24 00:41:46,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:41:46,771 INFO L471 AbstractCegarLoop]: Abstraction has 22935 states and 35239 transitions. [2024-11-24 00:41:46,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:41:46,771 INFO L276 IsEmpty]: Start isEmpty. Operand 22935 states and 35239 transitions. [2024-11-24 00:41:46,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-24 00:41:46,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:41:46,780 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:41:46,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 00:41:46,781 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:41:46,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:41:46,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1732282125, now seen corresponding path program 1 times [2024-11-24 00:41:46,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:41:46,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661943455] [2024-11-24 00:41:46,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:41:46,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:41:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:41:47,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-11-24 00:41:47,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:41:47,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661943455] [2024-11-24 00:41:47,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661943455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:41:47,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:41:47,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:41:47,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520726513] [2024-11-24 00:41:47,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:41:47,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:41:47,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:41:47,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:41:47,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:41:47,301 INFO L87 Difference]: Start difference. First operand 22935 states and 35239 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:41:53,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:41:53,948 INFO L93 Difference]: Finished difference Result 56923 states and 86580 transitions. [2024-11-24 00:41:53,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:41:53,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 317 [2024-11-24 00:41:53,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:41:54,049 INFO L225 Difference]: With dead ends: 56923 [2024-11-24 00:41:54,049 INFO L226 Difference]: Without dead ends: 34101 [2024-11-24 00:41:54,085 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 [2024-11-24 00:41:54,087 INFO L435 NwaCegarLoop]: 295 mSDtfsCounter, 435 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:41:54,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 857 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:41:54,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34101 states. [2024-11-24 00:42:00,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34101 to 29305. [2024-11-24 00:42:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29305 states, 26147 states have (on average 1.5120663938501548) internal successors, (39536), 26334 states have internal predecessors, (39536), 2496 states have call successors, (2496), 661 states have call predecessors, (2496), 661 states have return successors, (2496), 2309 states have call predecessors, (2496), 2496 states have call successors, (2496) [2024-11-24 00:42:00,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29305 states to 29305 states and 44528 transitions. [2024-11-24 00:42:00,972 INFO L78 Accepts]: Start accepts. Automaton has 29305 states and 44528 transitions. Word has length 317 [2024-11-24 00:42:00,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:00,972 INFO L471 AbstractCegarLoop]: Abstraction has 29305 states and 44528 transitions. [2024-11-24 00:42:00,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-11-24 00:42:00,973 INFO L276 IsEmpty]: Start isEmpty. Operand 29305 states and 44528 transitions. [2024-11-24 00:42:00,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-24 00:42:00,979 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:00,980 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:42:00,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 00:42:00,980 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:00,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:00,981 INFO L85 PathProgramCache]: Analyzing trace with hash 2008653004, now seen corresponding path program 1 times [2024-11-24 00:42:00,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:00,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742179673] [2024-11-24 00:42:00,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:00,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms