./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-86.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-86.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e73e85347bbfce4f45897bd7cee996074c05d40818a217b9a91bb8d2644bc292 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:32:28,360 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:32:28,485 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:32:28,493 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:32:28,493 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:32:28,542 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:32:28,543 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:32:28,544 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:32:28,544 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:32:28,545 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:32:28,546 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:32:28,546 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:32:28,546 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:32:28,547 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:32:28,547 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:32:28,548 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:32:28,548 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:32:28,548 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:32:28,548 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:32:28,549 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:32:28,549 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:32:28,549 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:32:28,549 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:32:28,550 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:32:28,550 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:32:28,550 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:32:28,550 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:32:28,550 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:32:28,550 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:32:28,551 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:32:28,551 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:32:28,552 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:32:28,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:32:28,552 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:32:28,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:32:28,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:32:28,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:32:28,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:32:28,553 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:32:28,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:32:28,553 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:32:28,554 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:32:28,554 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:32:28,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:32:28,554 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:32:28,554 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:32:28,554 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:32:28,555 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:32:28,555 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_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e73e85347bbfce4f45897bd7cee996074c05d40818a217b9a91bb8d2644bc292 [2024-11-27 23:32:28,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:32:28,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:32:28,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:32:28,981 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:32:28,982 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:32:28,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-86.i [2024-11-27 23:32:32,332 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/data/6b079a068/0f427e4e1341461eaeb630b8e36ad798/FLAG8e5899485 [2024-11-27 23:32:32,724 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:32:32,725 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-86.i [2024-11-27 23:32:32,735 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/data/6b079a068/0f427e4e1341461eaeb630b8e36ad798/FLAG8e5899485 [2024-11-27 23:32:32,757 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/data/6b079a068/0f427e4e1341461eaeb630b8e36ad798 [2024-11-27 23:32:32,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:32:32,762 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:32:32,763 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:32:32,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:32:32,769 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:32:32,770 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:32:32" (1/1) ... [2024-11-27 23:32:32,771 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bd83018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:32, skipping insertion in model container [2024-11-27 23:32:32,772 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:32:32" (1/1) ... [2024-11-27 23:32:32,806 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:32:33,026 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_38e216e1-3c33-4fc2-b134-cc0f473f58fc/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-86.i[917,930] [2024-11-27 23:32:33,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:32:33,162 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:32:33,181 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_38e216e1-3c33-4fc2-b134-cc0f473f58fc/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-86.i[917,930] [2024-11-27 23:32:33,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:32:33,254 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:32:33,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:33 WrapperNode [2024-11-27 23:32:33,257 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:32:33,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:32:33,258 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:32:33,259 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:32:33,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:33" (1/1) ... [2024-11-27 23:32:33,286 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:33" (1/1) ... [2024-11-27 23:32:33,350 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 165 [2024-11-27 23:32:33,355 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:32:33,355 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:32:33,356 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:32:33,356 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:32:33,374 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:33" (1/1) ... [2024-11-27 23:32:33,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:33" (1/1) ... [2024-11-27 23:32:33,381 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:33" (1/1) ... [2024-11-27 23:32:33,419 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]. [2024-11-27 23:32:33,419 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:33" (1/1) ... [2024-11-27 23:32:33,419 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:33" (1/1) ... [2024-11-27 23:32:33,427 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:33" (1/1) ... [2024-11-27 23:32:33,430 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:33" (1/1) ... [2024-11-27 23:32:33,440 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:33" (1/1) ... [2024-11-27 23:32:33,442 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:33" (1/1) ... [2024-11-27 23:32:33,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:33" (1/1) ... [2024-11-27 23:32:33,455 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:32:33,456 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:32:33,459 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:32:33,459 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:32:33,461 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:33" (1/1) ... [2024-11-27 23:32:33,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:32:33,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:33,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:32:33,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:32:33,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:32:33,545 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 23:32:33,546 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 23:32:33,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:32:33,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:32:33,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:32:33,646 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:32:33,648 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:32:34,310 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-27 23:32:34,310 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:32:34,333 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:32:34,334 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:32:34,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:32:34 BoogieIcfgContainer [2024-11-27 23:32:34,334 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:32:34,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:32:34,338 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:32:34,344 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:32:34,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:32:32" (1/3) ... [2024-11-27 23:32:34,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df7a2d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:32:34, skipping insertion in model container [2024-11-27 23:32:34,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:32:33" (2/3) ... [2024-11-27 23:32:34,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df7a2d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:32:34, skipping insertion in model container [2024-11-27 23:32:34,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:32:34" (3/3) ... [2024-11-27 23:32:34,350 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_steplocals_file-86.i [2024-11-27 23:32:34,362 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:32:34,364 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_codestructure_steplocals_file-86.i that has 2 procedures, 80 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 23:32:34,436 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:32:34,454 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;@2126f84b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:32:34,454 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:32:34,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 46 states have (on average 1.326086956521739) internal successors, (61), 47 states have internal predecessors, (61), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-27 23:32:34,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-27 23:32:34,476 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:34,478 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:34,478 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:34,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:34,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1687683337, now seen corresponding path program 1 times [2024-11-27 23:32:34,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:34,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559566812] [2024-11-27 23:32:34,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:34,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:34,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-27 23:32:34,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:32:34,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559566812] [2024-11-27 23:32:34,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559566812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:32:34,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064992072] [2024-11-27 23:32:34,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:34,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:32:34,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:32:34,995 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:32:34,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:32:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:32:35,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:32:35,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:32:35,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-27 23:32:35,328 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:32:35,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064992072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:32:35,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:32:35,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 23:32:35,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737844579] [2024-11-27 23:32:35,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:32:35,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:32:35,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:32:35,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:32:35,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:32:35,372 INFO L87 Difference]: Start difference. First operand has 80 states, 46 states have (on average 1.326086956521739) internal successors, (61), 47 states have internal predecessors, (61), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 23:32:35,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:32:35,415 INFO L93 Difference]: Finished difference Result 153 states and 271 transitions. [2024-11-27 23:32:35,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:32:35,418 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 190 [2024-11-27 23:32:35,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:32:35,428 INFO L225 Difference]: With dead ends: 153 [2024-11-27 23:32:35,429 INFO L226 Difference]: Without dead ends: 76 [2024-11-27 23:32:35,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:32:35,444 INFO L435 NwaCegarLoop]: 116 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, 116 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 [2024-11-27 23:32:35,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:32:35,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-27 23:32:35,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-27 23:32:35,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 43 states have (on average 1.255813953488372) internal successors, (54), 43 states have internal predecessors, (54), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-27 23:32:35,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 116 transitions. [2024-11-27 23:32:35,515 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 116 transitions. Word has length 190 [2024-11-27 23:32:35,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:32:35,516 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 116 transitions. [2024-11-27 23:32:35,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 23:32:35,516 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 116 transitions. [2024-11-27 23:32:35,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-27 23:32:35,521 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:32:35,521 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:32:35,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:32:35,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 23:32:35,722 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:32:35,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:32:35,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1176879243, now seen corresponding path program 1 times [2024-11-27 23:32:35,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:32:35,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512489415] [2024-11-27 23:32:35,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:32:35,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:32:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:07,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:33:07,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:33:07,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512489415] [2024-11-27 23:33:07,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512489415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:33:07,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:33:07,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-27 23:33:07,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333194686] [2024-11-27 23:33:07,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:33:07,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 23:33:07,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:33:07,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 23:33:07,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:33:07,705 INFO L87 Difference]: Start difference. First operand 76 states and 116 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:33:14,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:33:14,816 INFO L93 Difference]: Finished difference Result 207 states and 302 transitions. [2024-11-27 23:33:14,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 23:33:14,817 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 190 [2024-11-27 23:33:14,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:33:14,821 INFO L225 Difference]: With dead ends: 207 [2024-11-27 23:33:14,821 INFO L226 Difference]: Without dead ends: 134 [2024-11-27 23:33:14,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:33:14,823 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 106 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:33:14,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 588 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-27 23:33:14,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-27 23:33:14,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 91. [2024-11-27 23:33:14,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 58 states have internal predecessors, (73), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-27 23:33:14,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 135 transitions. [2024-11-27 23:33:14,841 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 135 transitions. Word has length 190 [2024-11-27 23:33:14,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:33:14,844 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 135 transitions. [2024-11-27 23:33:14,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:33:14,844 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 135 transitions. [2024-11-27 23:33:14,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-27 23:33:14,848 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:33:14,848 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:33:14,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:33:14,849 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:33:14,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:14,850 INFO L85 PathProgramCache]: Analyzing trace with hash 2106970803, now seen corresponding path program 1 times [2024-11-27 23:33:14,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:33:14,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001156294] [2024-11-27 23:33:14,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:14,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:33:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:33:14,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:33:14,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001156294] [2024-11-27 23:33:14,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001156294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:33:14,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:33:14,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:33:14,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272063301] [2024-11-27 23:33:14,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:33:14,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:33:14,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:33:14,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:33:14,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:33:14,978 INFO L87 Difference]: Start difference. First operand 91 states and 135 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:33:15,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:33:15,020 INFO L93 Difference]: Finished difference Result 210 states and 309 transitions. [2024-11-27 23:33:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:33:15,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 190 [2024-11-27 23:33:15,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:33:15,023 INFO L225 Difference]: With dead ends: 210 [2024-11-27 23:33:15,023 INFO L226 Difference]: Without dead ends: 122 [2024-11-27 23:33:15,024 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 [2024-11-27 23:33:15,025 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 47 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:33:15,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 268 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:33:15,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-27 23:33:15,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2024-11-27 23:33:15,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 77 states have (on average 1.2467532467532467) internal successors, (96), 78 states have internal predecessors, (96), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:33:15,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 174 transitions. [2024-11-27 23:33:15,047 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 174 transitions. Word has length 190 [2024-11-27 23:33:15,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:33:15,048 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 174 transitions. [2024-11-27 23:33:15,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:33:15,049 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 174 transitions. [2024-11-27 23:33:15,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-27 23:33:15,052 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:33:15,052 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:33:15,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:33:15,053 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:33:15,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:15,054 INFO L85 PathProgramCache]: Analyzing trace with hash -547142856, now seen corresponding path program 1 times [2024-11-27 23:33:15,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:33:15,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918620388] [2024-11-27 23:33:15,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:15,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:33:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:33:29,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:33:29,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918620388] [2024-11-27 23:33:29,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918620388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:33:29,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:33:29,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-27 23:33:29,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061313882] [2024-11-27 23:33:29,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:33:29,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 23:33:29,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:33:29,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 23:33:29,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:33:29,905 INFO L87 Difference]: Start difference. First operand 119 states and 174 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:33:34,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:33:34,590 INFO L93 Difference]: Finished difference Result 174 states and 237 transitions. [2024-11-27 23:33:34,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 23:33:34,591 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 191 [2024-11-27 23:33:34,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:33:34,595 INFO L225 Difference]: With dead ends: 174 [2024-11-27 23:33:34,598 INFO L226 Difference]: Without dead ends: 172 [2024-11-27 23:33:34,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2024-11-27 23:33:34,599 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 202 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:33:34,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 705 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:33:34,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-27 23:33:34,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 119. [2024-11-27 23:33:34,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 77 states have (on average 1.2467532467532467) internal successors, (96), 78 states have internal predecessors, (96), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:33:34,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 174 transitions. [2024-11-27 23:33:34,618 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 174 transitions. Word has length 191 [2024-11-27 23:33:34,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:33:34,619 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 174 transitions. [2024-11-27 23:33:34,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:33:34,619 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 174 transitions. [2024-11-27 23:33:34,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-27 23:33:34,622 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:33:34,622 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:33:34,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:33:34,623 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:33:34,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:34,623 INFO L85 PathProgramCache]: Analyzing trace with hash -288977418, now seen corresponding path program 1 times [2024-11-27 23:33:34,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:33:34,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656680872] [2024-11-27 23:33:34,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:34,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:33:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:44,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:33:44,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:33:44,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656680872] [2024-11-27 23:33:44,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656680872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:33:44,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:33:44,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-27 23:33:44,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20809936] [2024-11-27 23:33:44,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:33:44,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 23:33:44,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:33:44,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 23:33:44,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:33:44,897 INFO L87 Difference]: Start difference. First operand 119 states and 174 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:33:47,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:33:47,597 INFO L93 Difference]: Finished difference Result 294 states and 414 transitions. [2024-11-27 23:33:47,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:33:47,598 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 191 [2024-11-27 23:33:47,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:33:47,601 INFO L225 Difference]: With dead ends: 294 [2024-11-27 23:33:47,601 INFO L226 Difference]: Without dead ends: 178 [2024-11-27 23:33:47,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2024-11-27 23:33:47,603 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 172 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:33:47,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 906 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:33:47,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-27 23:33:47,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 125. [2024-11-27 23:33:47,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 83 states have (on average 1.2650602409638554) internal successors, (105), 84 states have internal predecessors, (105), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:33:47,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2024-11-27 23:33:47,620 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 183 transitions. Word has length 191 [2024-11-27 23:33:47,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:33:47,621 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 183 transitions. [2024-11-27 23:33:47,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:33:47,622 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 183 transitions. [2024-11-27 23:33:47,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-27 23:33:47,624 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:33:47,624 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:33:47,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:33:47,625 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:33:47,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:47,626 INFO L85 PathProgramCache]: Analyzing trace with hash -464936843, now seen corresponding path program 1 times [2024-11-27 23:33:47,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:33:47,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539278857] [2024-11-27 23:33:47,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:47,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:33:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:34:03,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:34:03,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:34:03,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539278857] [2024-11-27 23:34:03,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539278857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:34:03,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:34:03,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-27 23:34:03,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577626312] [2024-11-27 23:34:03,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:34:03,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 23:34:03,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:34:03,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 23:34:03,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:34:03,756 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:34:13,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:34:13,000 INFO L93 Difference]: Finished difference Result 188 states and 252 transitions. [2024-11-27 23:34:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 23:34:13,001 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 191 [2024-11-27 23:34:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:34:13,003 INFO L225 Difference]: With dead ends: 188 [2024-11-27 23:34:13,003 INFO L226 Difference]: Without dead ends: 186 [2024-11-27 23:34:13,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2024-11-27 23:34:13,005 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 191 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:34:13,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 916 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-27 23:34:13,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-27 23:34:13,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 132. [2024-11-27 23:34:13,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 91 states have internal predecessors, (115), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:34:13,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 193 transitions. [2024-11-27 23:34:13,026 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 193 transitions. Word has length 191 [2024-11-27 23:34:13,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:34:13,026 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 193 transitions. [2024-11-27 23:34:13,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:34:13,027 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 193 transitions. [2024-11-27 23:34:13,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-27 23:34:13,029 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:34:13,030 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:34:13,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:34:13,030 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:34:13,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:34:13,031 INFO L85 PathProgramCache]: Analyzing trace with hash -407678541, now seen corresponding path program 1 times [2024-11-27 23:34:13,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:34:13,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553793698] [2024-11-27 23:34:13,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:34:13,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:34:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:34:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:34:30,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:34:30,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553793698] [2024-11-27 23:34:30,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553793698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:34:30,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:34:30,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-27 23:34:30,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137011300] [2024-11-27 23:34:30,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:34:30,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 23:34:30,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:34:30,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 23:34:30,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:34:30,216 INFO L87 Difference]: Start difference. First operand 132 states and 193 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:34:36,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:34:36,145 INFO L93 Difference]: Finished difference Result 185 states and 249 transitions. [2024-11-27 23:34:36,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 23:34:36,146 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 191 [2024-11-27 23:34:36,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:34:36,147 INFO L225 Difference]: With dead ends: 185 [2024-11-27 23:34:36,148 INFO L226 Difference]: Without dead ends: 183 [2024-11-27 23:34:36,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2024-11-27 23:34:36,149 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 166 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:34:36,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 694 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 23:34:36,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-27 23:34:36,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 132. [2024-11-27 23:34:36,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 91 states have internal predecessors, (115), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:34:36,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 193 transitions. [2024-11-27 23:34:36,166 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 193 transitions. Word has length 191 [2024-11-27 23:34:36,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:34:36,167 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 193 transitions. [2024-11-27 23:34:36,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:34:36,168 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 193 transitions. [2024-11-27 23:34:36,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-27 23:34:36,170 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:34:36,170 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:34:36,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:34:36,171 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:34:36,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:34:36,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1548117915, now seen corresponding path program 1 times [2024-11-27 23:34:36,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:34:36,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961725453] [2024-11-27 23:34:36,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:34:36,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:34:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:34:59,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:34:59,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:34:59,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961725453] [2024-11-27 23:34:59,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961725453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:34:59,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:34:59,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-27 23:34:59,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960736737] [2024-11-27 23:34:59,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:34:59,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 23:34:59,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:34:59,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 23:34:59,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:34:59,737 INFO L87 Difference]: Start difference. First operand 132 states and 193 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:35:04,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:04,541 INFO L93 Difference]: Finished difference Result 174 states and 239 transitions. [2024-11-27 23:35:04,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:35:04,542 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 191 [2024-11-27 23:35:04,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:04,543 INFO L225 Difference]: With dead ends: 174 [2024-11-27 23:35:04,543 INFO L226 Difference]: Without dead ends: 172 [2024-11-27 23:35:04,544 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:35:04,544 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 137 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:04,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 562 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 23:35:04,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-27 23:35:04,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 133. [2024-11-27 23:35:04,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 91 states have (on average 1.2857142857142858) internal successors, (117), 92 states have internal predecessors, (117), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:35:04,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 195 transitions. [2024-11-27 23:35:04,565 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 195 transitions. Word has length 191 [2024-11-27 23:35:04,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:04,569 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 195 transitions. [2024-11-27 23:35:04,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:35:04,570 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 195 transitions. [2024-11-27 23:35:04,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-27 23:35:04,572 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:04,572 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:04,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:35:04,573 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:04,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:04,577 INFO L85 PathProgramCache]: Analyzing trace with hash 738771289, now seen corresponding path program 1 times [2024-11-27 23:35:04,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:04,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740033733] [2024-11-27 23:35:04,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:04,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:35:26,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:26,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740033733] [2024-11-27 23:35:26,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740033733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:26,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:26,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-27 23:35:26,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315941913] [2024-11-27 23:35:26,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:26,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 23:35:26,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:26,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 23:35:26,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:35:26,496 INFO L87 Difference]: Start difference. First operand 133 states and 195 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:35:30,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:30,386 INFO L93 Difference]: Finished difference Result 174 states and 239 transitions. [2024-11-27 23:35:30,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:35:30,387 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 191 [2024-11-27 23:35:30,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:30,389 INFO L225 Difference]: With dead ends: 174 [2024-11-27 23:35:30,390 INFO L226 Difference]: Without dead ends: 172 [2024-11-27 23:35:30,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:35:30,391 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 82 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:30,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 715 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-27 23:35:30,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-27 23:35:30,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 133. [2024-11-27 23:35:30,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 91 states have (on average 1.2857142857142858) internal successors, (117), 92 states have internal predecessors, (117), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:35:30,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 195 transitions. [2024-11-27 23:35:30,407 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 195 transitions. Word has length 191 [2024-11-27 23:35:30,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:30,407 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 195 transitions. [2024-11-27 23:35:30,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:35:30,408 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 195 transitions. [2024-11-27 23:35:30,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-27 23:35:30,409 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:30,409 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:30,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:35:30,410 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:35:30,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:30,410 INFO L85 PathProgramCache]: Analyzing trace with hash -837188900, now seen corresponding path program 1 times [2024-11-27 23:35:30,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:30,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750983831] [2024-11-27 23:35:30,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:30,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:36:20,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:36:20,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:36:20,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750983831] [2024-11-27 23:36:20,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750983831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:36:20,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:36:20,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:36:20,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728447268] [2024-11-27 23:36:20,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:36:20,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:36:20,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:36:20,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:36:20,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:36:20,464 INFO L87 Difference]: Start difference. First operand 133 states and 195 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:36:39,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:36:39,011 INFO L93 Difference]: Finished difference Result 191 states and 263 transitions. [2024-11-27 23:36:39,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 23:36:39,012 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 191 [2024-11-27 23:36:39,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:36:39,013 INFO L225 Difference]: With dead ends: 191 [2024-11-27 23:36:39,013 INFO L226 Difference]: Without dead ends: 189 [2024-11-27 23:36:39,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-27 23:36:39,014 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 118 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:36:39,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 956 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-27 23:36:39,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-27 23:36:39,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 144. [2024-11-27 23:36:39,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 102 states have (on average 1.2843137254901962) internal successors, (131), 103 states have internal predecessors, (131), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:36:39,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 209 transitions. [2024-11-27 23:36:39,034 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 209 transitions. Word has length 191 [2024-11-27 23:36:39,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:36:39,036 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 209 transitions. [2024-11-27 23:36:39,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:36:39,037 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 209 transitions. [2024-11-27 23:36:39,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-27 23:36:39,038 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:36:39,038 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:36:39,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 23:36:39,038 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:36:39,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:36:39,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1230215910, now seen corresponding path program 1 times [2024-11-27 23:36:39,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:36:39,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214969270] [2024-11-27 23:36:39,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:36:39,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:36:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:37:17,023 WARN L286 SmtUtils]: Spent 9.97s on a formula simplification. DAG size of input: 159 DAG size of output: 157 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:37:45,027 WARN L286 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 155 DAG size of output: 153 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:37:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:37:45,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:37:45,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214969270] [2024-11-27 23:37:45,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214969270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:37:45,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:37:45,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:37:45,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088599861] [2024-11-27 23:37:45,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:37:45,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:37:45,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:37:45,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:37:45,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:37:45,249 INFO L87 Difference]: Start difference. First operand 144 states and 209 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:37:59,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:37:59,329 INFO L93 Difference]: Finished difference Result 184 states and 254 transitions. [2024-11-27 23:37:59,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 23:37:59,331 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 191 [2024-11-27 23:37:59,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:37:59,333 INFO L225 Difference]: With dead ends: 184 [2024-11-27 23:37:59,333 INFO L226 Difference]: Without dead ends: 182 [2024-11-27 23:37:59,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 34.3s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2024-11-27 23:37:59,334 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 128 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:37:59,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 824 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-27 23:37:59,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-27 23:37:59,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 144. [2024-11-27 23:37:59,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 102 states have (on average 1.2843137254901962) internal successors, (131), 103 states have internal predecessors, (131), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:37:59,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 209 transitions. [2024-11-27 23:37:59,355 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 209 transitions. Word has length 191 [2024-11-27 23:37:59,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:37:59,356 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 209 transitions. [2024-11-27 23:37:59,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:37:59,360 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 209 transitions. [2024-11-27 23:37:59,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-27 23:37:59,362 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:37:59,362 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:37:59,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 23:37:59,362 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:37:59,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:37:59,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1877021970, now seen corresponding path program 1 times [2024-11-27 23:37:59,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:37:59,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131138260] [2024-11-27 23:37:59,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:37:59,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:37:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:13,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:38:13,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:13,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131138260] [2024-11-27 23:38:13,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131138260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:13,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:13,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:38:13,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833298133] [2024-11-27 23:38:13,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:13,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:38:13,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:13,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:38:13,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:38:13,056 INFO L87 Difference]: Start difference. First operand 144 states and 209 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:38:22,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:22,829 INFO L93 Difference]: Finished difference Result 202 states and 270 transitions. [2024-11-27 23:38:22,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 23:38:22,830 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2024-11-27 23:38:22,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:22,832 INFO L225 Difference]: With dead ends: 202 [2024-11-27 23:38:22,832 INFO L226 Difference]: Without dead ends: 200 [2024-11-27 23:38:22,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=264, Invalid=792, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 23:38:22,833 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 208 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:22,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 937 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 23:38:22,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-27 23:38:22,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 147. [2024-11-27 23:38:22,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 105 states have (on average 1.2952380952380953) internal successors, (136), 106 states have internal predecessors, (136), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:38:22,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 214 transitions. [2024-11-27 23:38:22,845 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 214 transitions. Word has length 192 [2024-11-27 23:38:22,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:22,845 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 214 transitions. [2024-11-27 23:38:22,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:38:22,846 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 214 transitions. [2024-11-27 23:38:22,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-27 23:38:22,847 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:22,847 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:22,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 23:38:22,848 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:22,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:22,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1934280272, now seen corresponding path program 1 times [2024-11-27 23:38:22,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:22,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835058579] [2024-11-27 23:38:22,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:22,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:36,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:38:36,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:36,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835058579] [2024-11-27 23:38:36,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835058579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:36,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:36,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:38:36,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148203095] [2024-11-27 23:38:36,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:36,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:38:36,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:36,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:38:36,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:38:36,821 INFO L87 Difference]: Start difference. First operand 147 states and 214 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:38:42,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:42,732 INFO L93 Difference]: Finished difference Result 305 states and 403 transitions. [2024-11-27 23:38:42,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-27 23:38:42,733 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2024-11-27 23:38:42,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:42,735 INFO L225 Difference]: With dead ends: 305 [2024-11-27 23:38:42,735 INFO L226 Difference]: Without dead ends: 303 [2024-11-27 23:38:42,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=234, Invalid=696, Unknown=0, NotChecked=0, Total=930 [2024-11-27 23:38:42,736 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 184 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:42,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 749 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-27 23:38:42,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-27 23:38:42,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 155. [2024-11-27 23:38:42,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 114 states have internal predecessors, (148), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:38:42,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 226 transitions. [2024-11-27 23:38:42,750 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 226 transitions. Word has length 192 [2024-11-27 23:38:42,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:42,750 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 226 transitions. [2024-11-27 23:38:42,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:38:42,750 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 226 transitions. [2024-11-27 23:38:42,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-27 23:38:42,751 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:42,751 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:42,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:38:42,751 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:38:42,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:42,752 INFO L85 PathProgramCache]: Analyzing trace with hash -404890568, now seen corresponding path program 1 times [2024-11-27 23:38:42,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:42,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044212700] [2024-11-27 23:38:42,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:42,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:38:59,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:59,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044212700] [2024-11-27 23:38:59,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044212700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:59,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:59,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:38:59,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484609291] [2024-11-27 23:38:59,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:59,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:38:59,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:59,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:38:59,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:38:59,605 INFO L87 Difference]: Start difference. First operand 155 states and 226 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:39:08,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:08,806 INFO L93 Difference]: Finished difference Result 210 states and 285 transitions. [2024-11-27 23:39:08,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 23:39:08,807 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2024-11-27 23:39:08,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:08,809 INFO L225 Difference]: With dead ends: 210 [2024-11-27 23:39:08,809 INFO L226 Difference]: Without dead ends: 208 [2024-11-27 23:39:08,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2024-11-27 23:39:08,810 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 131 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:08,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 812 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-27 23:39:08,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-27 23:39:08,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 155. [2024-11-27 23:39:08,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 114 states have internal predecessors, (148), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:39:08,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 226 transitions. [2024-11-27 23:39:08,828 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 226 transitions. Word has length 192 [2024-11-27 23:39:08,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:08,828 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 226 transitions. [2024-11-27 23:39:08,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:39:08,829 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 226 transitions. [2024-11-27 23:39:08,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-27 23:39:08,830 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:08,830 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:08,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 23:39:08,830 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:08,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:08,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1214237194, now seen corresponding path program 1 times [2024-11-27 23:39:08,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:08,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296274116] [2024-11-27 23:39:08,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:08,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:39:22,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:22,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296274116] [2024-11-27 23:39:22,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296274116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:22,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:22,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:39:22,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244743099] [2024-11-27 23:39:22,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:22,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:39:22,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:22,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:39:22,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:39:22,530 INFO L87 Difference]: Start difference. First operand 155 states and 226 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:39:28,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:28,800 INFO L93 Difference]: Finished difference Result 210 states and 285 transitions. [2024-11-27 23:39:28,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:39:28,801 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2024-11-27 23:39:28,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:28,802 INFO L225 Difference]: With dead ends: 210 [2024-11-27 23:39:28,802 INFO L226 Difference]: Without dead ends: 208 [2024-11-27 23:39:28,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2024-11-27 23:39:28,803 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 163 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:28,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 890 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:39:28,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-27 23:39:28,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 148. [2024-11-27 23:39:28,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 106 states have (on average 1.3018867924528301) internal successors, (138), 107 states have internal predecessors, (138), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:39:28,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 216 transitions. [2024-11-27 23:39:28,816 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 216 transitions. Word has length 192 [2024-11-27 23:39:28,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:28,816 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 216 transitions. [2024-11-27 23:39:28,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:39:28,817 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 216 transitions. [2024-11-27 23:39:28,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-27 23:39:28,818 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:28,818 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:28,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 23:39:28,818 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:28,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:28,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1347474258, now seen corresponding path program 1 times [2024-11-27 23:39:28,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:28,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8744620] [2024-11-27 23:39:28,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:28,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:39:41,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:41,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8744620] [2024-11-27 23:39:41,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8744620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:41,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:41,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-27 23:39:41,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612838127] [2024-11-27 23:39:41,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:41,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 23:39:41,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:41,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 23:39:41,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:39:41,822 INFO L87 Difference]: Start difference. First operand 148 states and 216 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:39:47,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:47,064 INFO L93 Difference]: Finished difference Result 199 states and 272 transitions. [2024-11-27 23:39:47,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 23:39:47,066 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2024-11-27 23:39:47,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:47,067 INFO L225 Difference]: With dead ends: 199 [2024-11-27 23:39:47,067 INFO L226 Difference]: Without dead ends: 197 [2024-11-27 23:39:47,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2024-11-27 23:39:47,068 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 103 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:47,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 862 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-27 23:39:47,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-27 23:39:47,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 149. [2024-11-27 23:39:47,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 107 states have (on average 1.2990654205607477) internal successors, (139), 108 states have internal predecessors, (139), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:39:47,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 217 transitions. [2024-11-27 23:39:47,086 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 217 transitions. Word has length 192 [2024-11-27 23:39:47,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:47,086 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 217 transitions. [2024-11-27 23:39:47,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:39:47,087 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 217 transitions. [2024-11-27 23:39:47,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-27 23:39:47,088 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:47,088 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:47,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 23:39:47,089 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:47,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:47,089 INFO L85 PathProgramCache]: Analyzing trace with hash -991696582, now seen corresponding path program 1 times [2024-11-27 23:39:47,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:47,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134536239] [2024-11-27 23:39:47,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:47,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:55,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:39:55,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:55,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134536239] [2024-11-27 23:39:55,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134536239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:55,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:55,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-27 23:39:55,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542523274] [2024-11-27 23:39:55,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:55,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 23:39:55,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:55,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 23:39:55,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:39:55,093 INFO L87 Difference]: Start difference. First operand 149 states and 217 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:39:58,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:58,455 INFO L93 Difference]: Finished difference Result 211 states and 285 transitions. [2024-11-27 23:39:58,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 23:39:58,455 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2024-11-27 23:39:58,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:58,457 INFO L225 Difference]: With dead ends: 211 [2024-11-27 23:39:58,458 INFO L226 Difference]: Without dead ends: 209 [2024-11-27 23:39:58,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2024-11-27 23:39:58,459 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 165 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:58,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 750 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 23:39:58,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-27 23:39:58,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 151. [2024-11-27 23:39:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 1.3027522935779816) internal successors, (142), 110 states have internal predecessors, (142), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:39:58,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 220 transitions. [2024-11-27 23:39:58,474 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 220 transitions. Word has length 192 [2024-11-27 23:39:58,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:58,475 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 220 transitions. [2024-11-27 23:39:58,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:39:58,475 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 220 transitions. [2024-11-27 23:39:58,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-27 23:39:58,476 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:58,477 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:58,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 23:39:58,477 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:39:58,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:58,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1801043208, now seen corresponding path program 1 times [2024-11-27 23:39:58,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:58,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232831483] [2024-11-27 23:39:58,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:39:58,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:40:10,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:40:10,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:40:10,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232831483] [2024-11-27 23:40:10,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232831483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:40:10,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:40:10,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:40:10,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668711699] [2024-11-27 23:40:10,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:40:10,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:40:10,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:40:10,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:40:10,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:40:10,533 INFO L87 Difference]: Start difference. First operand 151 states and 220 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:40:20,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:40:20,092 INFO L93 Difference]: Finished difference Result 211 states and 285 transitions. [2024-11-27 23:40:20,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:40:20,094 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2024-11-27 23:40:20,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:40:20,096 INFO L225 Difference]: With dead ends: 211 [2024-11-27 23:40:20,096 INFO L226 Difference]: Without dead ends: 209 [2024-11-27 23:40:20,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2024-11-27 23:40:20,097 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 155 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:40:20,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 992 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 23:40:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-27 23:40:20,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 149. [2024-11-27 23:40:20,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 107 states have (on average 1.2990654205607477) internal successors, (139), 108 states have internal predecessors, (139), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:40:20,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 217 transitions. [2024-11-27 23:40:20,113 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 217 transitions. Word has length 192 [2024-11-27 23:40:20,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:40:20,114 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 217 transitions. [2024-11-27 23:40:20,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:40:20,114 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 217 transitions. [2024-11-27 23:40:20,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-27 23:40:20,115 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:40:20,115 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:40:20,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 23:40:20,116 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:40:20,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:40:20,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1889370865, now seen corresponding path program 1 times [2024-11-27 23:40:20,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:40:20,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241208423] [2024-11-27 23:40:20,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:40:20,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:40:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:40:34,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:40:34,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:40:34,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241208423] [2024-11-27 23:40:34,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241208423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:40:34,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:40:34,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:40:34,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133330006] [2024-11-27 23:40:34,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:40:34,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:40:34,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:40:34,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:40:34,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:40:34,132 INFO L87 Difference]: Start difference. First operand 149 states and 217 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:40:43,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:40:43,761 INFO L93 Difference]: Finished difference Result 218 states and 294 transitions. [2024-11-27 23:40:43,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 23:40:43,762 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2024-11-27 23:40:43,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:40:43,764 INFO L225 Difference]: With dead ends: 218 [2024-11-27 23:40:43,764 INFO L226 Difference]: Without dead ends: 216 [2024-11-27 23:40:43,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=288, Invalid=972, Unknown=0, NotChecked=0, Total=1260 [2024-11-27 23:40:43,765 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 189 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:40:43,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1097 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-27 23:40:43,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-27 23:40:43,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 154. [2024-11-27 23:40:43,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 112 states have (on average 1.3035714285714286) internal successors, (146), 113 states have internal predecessors, (146), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:40:43,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2024-11-27 23:40:43,781 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 192 [2024-11-27 23:40:43,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:40:43,782 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2024-11-27 23:40:43,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:40:43,782 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2024-11-27 23:40:43,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-27 23:40:43,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:40:43,783 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:40:43,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 23:40:43,784 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:40:43,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:40:43,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1832112563, now seen corresponding path program 1 times [2024-11-27 23:40:43,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:40:43,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855756958] [2024-11-27 23:40:43,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:40:43,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:40:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:41:02,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:41:02,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:41:02,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855756958] [2024-11-27 23:41:02,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855756958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:41:02,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:41:02,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:41:02,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704887118] [2024-11-27 23:41:02,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:41:02,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:41:02,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:41:02,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:41:02,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:41:02,724 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:41:08,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:41:08,586 INFO L93 Difference]: Finished difference Result 202 states and 277 transitions. [2024-11-27 23:41:08,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 23:41:08,587 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2024-11-27 23:41:08,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:41:08,589 INFO L225 Difference]: With dead ends: 202 [2024-11-27 23:41:08,589 INFO L226 Difference]: Without dead ends: 200 [2024-11-27 23:41:08,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=194, Invalid=562, Unknown=0, NotChecked=0, Total=756 [2024-11-27 23:41:08,590 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 135 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:41:08,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 762 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 23:41:08,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-27 23:41:08,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 154. [2024-11-27 23:41:08,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 112 states have (on average 1.3035714285714286) internal successors, (146), 113 states have internal predecessors, (146), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:41:08,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2024-11-27 23:41:08,605 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 192 [2024-11-27 23:41:08,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:41:08,606 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2024-11-27 23:41:08,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:41:08,606 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2024-11-27 23:41:08,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-27 23:41:08,607 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:41:08,608 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:41:08,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 23:41:08,608 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:41:08,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:41:08,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1209312495, now seen corresponding path program 1 times [2024-11-27 23:41:08,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:41:08,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493122282] [2024-11-27 23:41:08,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:41:08,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:41:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:41:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:41:23,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:41:23,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493122282] [2024-11-27 23:41:23,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493122282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:41:23,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:41:23,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:41:23,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055184195] [2024-11-27 23:41:23,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:41:23,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:41:23,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:41:23,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:41:23,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:41:23,333 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:41:32,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:41:32,234 INFO L93 Difference]: Finished difference Result 216 states and 291 transitions. [2024-11-27 23:41:32,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 23:41:32,235 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2024-11-27 23:41:32,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:41:32,236 INFO L225 Difference]: With dead ends: 216 [2024-11-27 23:41:32,236 INFO L226 Difference]: Without dead ends: 214 [2024-11-27 23:41:32,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=258, Invalid=798, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 23:41:32,237 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 194 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:41:32,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 782 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-27 23:41:32,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-27 23:41:32,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 154. [2024-11-27 23:41:32,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 112 states have (on average 1.3035714285714286) internal successors, (146), 113 states have internal predecessors, (146), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:41:32,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2024-11-27 23:41:32,254 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 192 [2024-11-27 23:41:32,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:41:32,255 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2024-11-27 23:41:32,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:41:32,255 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2024-11-27 23:41:32,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-27 23:41:32,256 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:41:32,257 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:41:32,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 23:41:32,257 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:41:32,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:41:32,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1152054193, now seen corresponding path program 1 times [2024-11-27 23:41:32,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:41:32,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207593112] [2024-11-27 23:41:32,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:41:32,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:41:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:41:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:41:52,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:41:52,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207593112] [2024-11-27 23:41:52,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207593112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:41:52,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:41:52,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:41:52,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394936711] [2024-11-27 23:41:52,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:41:52,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:41:52,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:41:52,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:41:52,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:41:52,287 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:41:58,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:41:58,609 INFO L93 Difference]: Finished difference Result 200 states and 274 transitions. [2024-11-27 23:41:58,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:41:58,610 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2024-11-27 23:41:58,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:41:58,612 INFO L225 Difference]: With dead ends: 200 [2024-11-27 23:41:58,612 INFO L226 Difference]: Without dead ends: 198 [2024-11-27 23:41:58,612 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2024-11-27 23:41:58,614 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 151 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:41:58,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 869 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-27 23:41:58,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-27 23:41:58,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 154. [2024-11-27 23:41:58,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 112 states have (on average 1.3035714285714286) internal successors, (146), 113 states have internal predecessors, (146), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-27 23:41:58,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 224 transitions. [2024-11-27 23:41:58,631 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 224 transitions. Word has length 192 [2024-11-27 23:41:58,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:41:58,631 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 224 transitions. [2024-11-27 23:41:58,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:41:58,632 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 224 transitions. [2024-11-27 23:41:58,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-27 23:41:58,633 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:41:58,633 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:41:58,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 23:41:58,633 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:41:58,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:41:58,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1763565237, now seen corresponding path program 1 times [2024-11-27 23:41:58,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:41:58,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102217871] [2024-11-27 23:41:58,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:41:58,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:41:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:41:58,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:41:58,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:41:58,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102217871] [2024-11-27 23:41:58,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102217871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:41:58,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:41:58,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:41:58,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355266333] [2024-11-27 23:41:58,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:41:58,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:41:58,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:41:58,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:41:58,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:41:58,775 INFO L87 Difference]: Start difference. First operand 154 states and 224 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:41:58,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:41:58,804 INFO L93 Difference]: Finished difference Result 407 states and 597 transitions. [2024-11-27 23:41:58,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:41:58,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2024-11-27 23:41:58,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:41:58,809 INFO L225 Difference]: With dead ends: 407 [2024-11-27 23:41:58,809 INFO L226 Difference]: Without dead ends: 256 [2024-11-27 23:41:58,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:41:58,810 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 58 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:41:58,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 243 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:41:58,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-27 23:41:58,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 254. [2024-11-27 23:41:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 171 states have (on average 1.2748538011695907) internal successors, (218), 173 states have internal predecessors, (218), 78 states have call successors, (78), 4 states have call predecessors, (78), 4 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-27 23:41:58,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 374 transitions. [2024-11-27 23:41:58,844 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 374 transitions. Word has length 192 [2024-11-27 23:41:58,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:41:58,845 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 374 transitions. [2024-11-27 23:41:58,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:41:58,845 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 374 transitions. [2024-11-27 23:41:58,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-27 23:41:58,846 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:41:58,847 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:41:58,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 23:41:58,847 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:41:58,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:41:58,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1176759223, now seen corresponding path program 1 times [2024-11-27 23:41:58,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:41:58,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025302047] [2024-11-27 23:41:58,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:41:58,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:41:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:42:33,868 WARN L286 SmtUtils]: Spent 13.11s on a formula simplification. DAG size of input: 159 DAG size of output: 157 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:42:46,166 WARN L286 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 152 DAG size of output: 150 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:42:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:42:56,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:42:56,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025302047] [2024-11-27 23:42:56,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025302047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:42:56,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:42:56,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 23:42:56,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092458415] [2024-11-27 23:42:56,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:42:56,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:42:56,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:42:56,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:42:56,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-27 23:42:56,848 INFO L87 Difference]: Start difference. First operand 254 states and 374 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:43:18,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:43:18,019 INFO L93 Difference]: Finished difference Result 346 states and 487 transitions. [2024-11-27 23:43:18,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 23:43:18,020 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2024-11-27 23:43:18,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:43:18,022 INFO L225 Difference]: With dead ends: 346 [2024-11-27 23:43:18,023 INFO L226 Difference]: Without dead ends: 344 [2024-11-27 23:43:18,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 45.7s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2024-11-27 23:43:18,024 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 148 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:43:18,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1192 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-27 23:43:18,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-27 23:43:18,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 254. [2024-11-27 23:43:18,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 171 states have (on average 1.2748538011695907) internal successors, (218), 173 states have internal predecessors, (218), 78 states have call successors, (78), 4 states have call predecessors, (78), 4 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-27 23:43:18,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 374 transitions. [2024-11-27 23:43:18,061 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 374 transitions. Word has length 192 [2024-11-27 23:43:18,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:43:18,061 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 374 transitions. [2024-11-27 23:43:18,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:43:18,062 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 374 transitions. [2024-11-27 23:43:18,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-27 23:43:18,063 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:43:18,063 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:43:18,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-27 23:43:18,063 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:43:18,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:43:18,064 INFO L85 PathProgramCache]: Analyzing trace with hash 783732213, now seen corresponding path program 1 times [2024-11-27 23:43:18,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:43:18,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978434350] [2024-11-27 23:43:18,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:43:18,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:43:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:43:46,953 WARN L286 SmtUtils]: Spent 7.54s on a formula simplification. DAG size of input: 157 DAG size of output: 155 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:44:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:44:08,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:44:08,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978434350] [2024-11-27 23:44:08,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978434350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:44:08,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:44:08,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-27 23:44:08,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634760098] [2024-11-27 23:44:08,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:44:08,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 23:44:08,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:44:08,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 23:44:08,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:44:08,404 INFO L87 Difference]: Start difference. First operand 254 states and 374 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:44:26,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:44:26,570 INFO L93 Difference]: Finished difference Result 334 states and 470 transitions. [2024-11-27 23:44:26,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:44:26,571 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2024-11-27 23:44:26,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:44:26,572 INFO L225 Difference]: With dead ends: 334 [2024-11-27 23:44:26,572 INFO L226 Difference]: Without dead ends: 332 [2024-11-27 23:44:26,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 34.3s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2024-11-27 23:44:26,573 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 181 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:44:26,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 878 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-27 23:44:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-27 23:44:26,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 244. [2024-11-27 23:44:26,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 161 states have (on average 1.2670807453416149) internal successors, (204), 163 states have internal predecessors, (204), 78 states have call successors, (78), 4 states have call predecessors, (78), 4 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-27 23:44:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 360 transitions. [2024-11-27 23:44:26,615 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 360 transitions. Word has length 192 [2024-11-27 23:44:26,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:44:26,616 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 360 transitions. [2024-11-27 23:44:26,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:44:26,616 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 360 transitions. [2024-11-27 23:44:26,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-27 23:44:26,621 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:44:26,622 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:44:26,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-27 23:44:26,622 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:44:26,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:44:26,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1475529198, now seen corresponding path program 1 times [2024-11-27 23:44:26,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:44:26,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608955742] [2024-11-27 23:44:26,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:44:26,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:44:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:44:52,708 WARN L286 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 157 DAG size of output: 155 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:45:32,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-27 23:45:32,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:45:32,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608955742] [2024-11-27 23:45:32,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608955742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:45:32,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:45:32,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-27 23:45:32,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006202183] [2024-11-27 23:45:32,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:45:32,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 23:45:32,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:45:32,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 23:45:32,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:45:32,066 INFO L87 Difference]: Start difference. First operand 244 states and 360 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:45:47,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:45:47,336 INFO L93 Difference]: Finished difference Result 372 states and 515 transitions. [2024-11-27 23:45:47,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:45:47,337 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 192 [2024-11-27 23:45:47,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:45:47,339 INFO L225 Difference]: With dead ends: 372 [2024-11-27 23:45:47,339 INFO L226 Difference]: Without dead ends: 370 [2024-11-27 23:45:47,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 33.9s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2024-11-27 23:45:47,340 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 121 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:45:47,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 929 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-27 23:45:47,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-27 23:45:47,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 260. [2024-11-27 23:45:47,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 177 states have (on average 1.2881355932203389) internal successors, (228), 179 states have internal predecessors, (228), 78 states have call successors, (78), 4 states have call predecessors, (78), 4 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-27 23:45:47,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 384 transitions. [2024-11-27 23:45:47,377 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 384 transitions. Word has length 192 [2024-11-27 23:45:47,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:45:47,377 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 384 transitions. [2024-11-27 23:45:47,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-27 23:45:47,378 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 384 transitions. [2024-11-27 23:45:47,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-27 23:45:47,379 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:45:47,379 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:45:47,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-27 23:45:47,379 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:45:47,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:45:47,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1532787500, now seen corresponding path program 1 times [2024-11-27 23:45:47,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:45:47,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208190966] [2024-11-27 23:45:47,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:45:47,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:45:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:46:16,166 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-27 23:46:16,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-11-27 23:46:16,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-27 23:46:16,168 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:294) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.buildPredicates(NestedInterpolantsBuilder.java:417) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:292) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:227) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 50 more [2024-11-27 23:46:16,175 INFO L158 Benchmark]: Toolchain (without parser) took 823413.52ms. Allocated memory was 117.4MB in the beginning and 629.1MB in the end (delta: 511.7MB). Free memory was 94.7MB in the beginning and 486.2MB in the end (delta: -391.5MB). Peak memory consumption was 115.9MB. Max. memory is 16.1GB. [2024-11-27 23:46:16,175 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 142.6MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:46:16,175 INFO L158 Benchmark]: CACSL2BoogieTranslator took 494.47ms. Allocated memory is still 117.4MB. Free memory was 94.4MB in the beginning and 79.9MB in the end (delta: 14.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 23:46:16,176 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.61ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 76.7MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:46:16,176 INFO L158 Benchmark]: Boogie Preprocessor took 99.60ms. Allocated memory is still 117.4MB. Free memory was 76.7MB in the beginning and 71.5MB in the end (delta: 5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:46:16,176 INFO L158 Benchmark]: RCFGBuilder took 878.55ms. Allocated memory is still 117.4MB. Free memory was 71.5MB in the beginning and 49.3MB in the end (delta: 22.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 23:46:16,176 INFO L158 Benchmark]: TraceAbstraction took 821836.13ms. Allocated memory was 117.4MB in the beginning and 629.1MB in the end (delta: 511.7MB). Free memory was 48.7MB in the beginning and 486.2MB in the end (delta: -437.4MB). Peak memory consumption was 74.0MB. Max. memory is 16.1GB. [2024-11-27 23:46:16,182 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 142.6MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 494.47ms. Allocated memory is still 117.4MB. Free memory was 94.4MB in the beginning and 79.9MB in the end (delta: 14.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.61ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 76.7MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 99.60ms. Allocated memory is still 117.4MB. Free memory was 76.7MB in the beginning and 71.5MB in the end (delta: 5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 878.55ms. Allocated memory is still 117.4MB. Free memory was 71.5MB in the beginning and 49.3MB in the end (delta: 22.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 821836.13ms. Allocated memory was 117.4MB in the beginning and 629.1MB in the end (delta: 511.7MB). Free memory was 48.7MB in the beginning and 486.2MB in the end (delta: -437.4MB). Peak memory consumption was 74.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-86.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e73e85347bbfce4f45897bd7cee996074c05d40818a217b9a91bb8d2644bc292 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:46:19,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:46:19,137 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-27 23:46:19,143 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:46:19,144 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:46:19,189 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:46:19,190 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:46:19,190 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:46:19,191 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:46:19,191 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:46:19,191 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:46:19,191 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:46:19,191 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:46:19,192 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:46:19,192 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:46:19,192 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:46:19,192 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:46:19,192 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:46:19,192 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:46:19,192 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:46:19,192 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:46:19,193 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:46:19,193 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:46:19,193 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 23:46:19,193 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-27 23:46:19,193 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-27 23:46:19,193 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:46:19,193 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:46:19,194 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:46:19,194 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:46:19,194 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:46:19,194 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:46:19,195 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:46:19,195 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:46:19,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:46:19,195 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:46:19,195 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:46:19,195 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:46:19,195 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:46:19,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:46:19,196 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:46:19,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:46:19,196 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:46:19,196 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:46:19,196 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-27 23:46:19,197 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-27 23:46:19,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:46:19,197 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:46:19,197 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:46:19,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:46:19,197 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_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e73e85347bbfce4f45897bd7cee996074c05d40818a217b9a91bb8d2644bc292 [2024-11-27 23:46:19,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:46:19,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:46:19,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:46:19,613 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:46:19,613 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:46:19,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-86.i [2024-11-27 23:46:22,985 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/data/21353102b/48ab01f30c8742c08167fd5dc13f5aa7/FLAGcb440d16b [2024-11-27 23:46:23,331 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:46:23,332 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-86.i [2024-11-27 23:46:23,359 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/data/21353102b/48ab01f30c8742c08167fd5dc13f5aa7/FLAGcb440d16b [2024-11-27 23:46:23,403 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/data/21353102b/48ab01f30c8742c08167fd5dc13f5aa7 [2024-11-27 23:46:23,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:46:23,408 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:46:23,412 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:46:23,412 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:46:23,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:46:23,425 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:46:23" (1/1) ... [2024-11-27 23:46:23,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a27ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:46:23, skipping insertion in model container [2024-11-27 23:46:23,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:46:23" (1/1) ... [2024-11-27 23:46:23,457 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:46:23,668 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_38e216e1-3c33-4fc2-b134-cc0f473f58fc/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-86.i[917,930] [2024-11-27 23:46:23,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:46:23,814 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:46:23,831 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_38e216e1-3c33-4fc2-b134-cc0f473f58fc/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-86.i[917,930] [2024-11-27 23:46:23,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:46:23,911 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:46:23,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:46:23 WrapperNode [2024-11-27 23:46:23,912 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:46:23,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:46:23,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:46:23,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:46:23,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:46:23" (1/1) ... [2024-11-27 23:46:23,941 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:46:23" (1/1) ... [2024-11-27 23:46:23,987 INFO L138 Inliner]: procedures = 27, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 160 [2024-11-27 23:46:23,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:46:23,991 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:46:23,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:46:23,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:46:24,007 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:46:23" (1/1) ... [2024-11-27 23:46:24,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:46:23" (1/1) ... [2024-11-27 23:46:24,014 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:46:23" (1/1) ... [2024-11-27 23:46:24,033 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]. [2024-11-27 23:46:24,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:46:23" (1/1) ... [2024-11-27 23:46:24,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:46:23" (1/1) ... [2024-11-27 23:46:24,053 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:46:23" (1/1) ... [2024-11-27 23:46:24,054 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:46:23" (1/1) ... [2024-11-27 23:46:24,059 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:46:23" (1/1) ... [2024-11-27 23:46:24,068 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:46:23" (1/1) ... [2024-11-27 23:46:24,069 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:46:23" (1/1) ... [2024-11-27 23:46:24,073 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:46:24,077 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:46:24,081 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:46:24,082 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:46:24,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:46:23" (1/1) ... [2024-11-27 23:46:24,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:46:24,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:46:24,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:46:24,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:46:24,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:46:24,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-27 23:46:24,176 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 23:46:24,176 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 23:46:24,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:46:24,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:46:24,306 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:46:24,308 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:46:24,859 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-27 23:46:24,860 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:46:24,873 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:46:24,874 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:46:24,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:46:24 BoogieIcfgContainer [2024-11-27 23:46:24,874 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:46:24,877 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:46:24,877 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:46:24,883 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:46:24,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:46:23" (1/3) ... [2024-11-27 23:46:24,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c144b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:46:24, skipping insertion in model container [2024-11-27 23:46:24,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:46:23" (2/3) ... [2024-11-27 23:46:24,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c144b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:46:24, skipping insertion in model container [2024-11-27 23:46:24,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:46:24" (3/3) ... [2024-11-27 23:46:24,887 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_steplocals_file-86.i [2024-11-27 23:46:24,906 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:46:24,908 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_codestructure_steplocals_file-86.i that has 2 procedures, 80 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 23:46:24,977 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:46:24,995 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;@9bc42db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:46:24,996 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:46:25,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 46 states have (on average 1.326086956521739) internal successors, (61), 47 states have internal predecessors, (61), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-27 23:46:25,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-27 23:46:25,022 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:46:25,023 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:46:25,023 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:46:25,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:46:25,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1687683337, now seen corresponding path program 1 times [2024-11-27 23:46:25,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:46:25,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976399155] [2024-11-27 23:46:25,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:46:25,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:46:25,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:46:25,055 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:46:25,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:46:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:46:25,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:46:25,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:46:25,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-27 23:46:25,472 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:46:25,473 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 23:46:25,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976399155] [2024-11-27 23:46:25,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976399155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:46:25,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:46:25,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:46:25,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969738229] [2024-11-27 23:46:25,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:46:25,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:46:25,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 23:46:25,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:46:25,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:46:25,519 INFO L87 Difference]: Start difference. First operand has 80 states, 46 states have (on average 1.326086956521739) internal successors, (61), 47 states have internal predecessors, (61), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 23:46:25,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:46:25,571 INFO L93 Difference]: Finished difference Result 153 states and 271 transitions. [2024-11-27 23:46:25,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:46:25,573 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 190 [2024-11-27 23:46:25,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:46:25,583 INFO L225 Difference]: With dead ends: 153 [2024-11-27 23:46:25,584 INFO L226 Difference]: Without dead ends: 76 [2024-11-27 23:46:25,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:46:25,594 INFO L435 NwaCegarLoop]: 116 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, 116 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 [2024-11-27 23:46:25,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:46:25,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-27 23:46:25,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-27 23:46:25,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 43 states have (on average 1.255813953488372) internal successors, (54), 43 states have internal predecessors, (54), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-27 23:46:25,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 116 transitions. [2024-11-27 23:46:25,664 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 116 transitions. Word has length 190 [2024-11-27 23:46:25,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:46:25,667 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 116 transitions. [2024-11-27 23:46:25,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 23:46:25,668 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 116 transitions. [2024-11-27 23:46:25,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-27 23:46:25,675 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:46:25,676 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:46:25,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:46:25,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:46:25,877 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:46:25,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:46:25,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1176879243, now seen corresponding path program 1 times [2024-11-27 23:46:25,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 23:46:25,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1161994623] [2024-11-27 23:46:25,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:46:25,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:46:25,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:46:25,883 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:46:25,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_38e216e1-3c33-4fc2-b134-cc0f473f58fc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:46:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:46:26,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-27 23:46:26,287 INFO L279 TraceCheckSpWp]: Computing forward predicates...