./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-63.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_e0261f29-902f-4840-89d9-eab51ee7f092/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0261f29-902f-4840-89d9-eab51ee7f092/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_e0261f29-902f-4840-89d9-eab51ee7f092/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0261f29-902f-4840-89d9-eab51ee7f092/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-63.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0261f29-902f-4840-89d9-eab51ee7f092/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_e0261f29-902f-4840-89d9-eab51ee7f092/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 032103455c965390b2cd90e1021eb4797074287a2ad4fda3336b307fb716d96d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:57:07,015 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:57:07,142 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0261f29-902f-4840-89d9-eab51ee7f092/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:57:07,150 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:57:07,151 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:57:07,187 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:57:07,188 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:57:07,189 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:57:07,189 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:57:07,190 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:57:07,190 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:57:07,191 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:57:07,192 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:57:07,192 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:57:07,192 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:57:07,192 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:57:07,193 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:57:07,193 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:57:07,193 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:57:07,194 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:57:07,194 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:57:07,194 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:57:07,194 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:57:07,194 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:57:07,194 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:57:07,195 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:57:07,195 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:57:07,195 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:57:07,195 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:57:07,195 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:57:07,195 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:57:07,196 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:57:07,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:57:07,196 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:57:07,197 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:57:07,197 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:57:07,197 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:57:07,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:57:07,198 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:57:07,198 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:57:07,198 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:57:07,198 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:57:07,198 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:57:07,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:57:07,198 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:57:07,199 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:57:07,199 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:57:07,199 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:57:07,199 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_e0261f29-902f-4840-89d9-eab51ee7f092/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 -> 032103455c965390b2cd90e1021eb4797074287a2ad4fda3336b307fb716d96d [2024-11-28 03:57:07,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:57:07,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:57:07,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:57:07,525 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:57:07,526 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:57:07,527 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0261f29-902f-4840-89d9-eab51ee7f092/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-63.i [2024-11-28 03:57:11,150 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0261f29-902f-4840-89d9-eab51ee7f092/bin/uautomizer-verify-aQ6SnzHsRB/data/c378f4297/a525e3898d254e80936af6c2d39f13a6/FLAGcba89c22a [2024-11-28 03:57:11,582 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:57:11,583 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0261f29-902f-4840-89d9-eab51ee7f092/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-63.i [2024-11-28 03:57:11,599 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0261f29-902f-4840-89d9-eab51ee7f092/bin/uautomizer-verify-aQ6SnzHsRB/data/c378f4297/a525e3898d254e80936af6c2d39f13a6/FLAGcba89c22a [2024-11-28 03:57:11,734 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0261f29-902f-4840-89d9-eab51ee7f092/bin/uautomizer-verify-aQ6SnzHsRB/data/c378f4297/a525e3898d254e80936af6c2d39f13a6 [2024-11-28 03:57:11,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:57:11,738 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:57:11,742 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:57:11,742 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:57:11,748 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:57:11,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:57:11" (1/1) ... [2024-11-28 03:57:11,750 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ea1508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:11, skipping insertion in model container [2024-11-28 03:57:11,750 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:57:11" (1/1) ... [2024-11-28 03:57:11,789 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:57:12,014 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_e0261f29-902f-4840-89d9-eab51ee7f092/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-63.i[916,929] [2024-11-28 03:57:12,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:57:12,142 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:57:12,155 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_e0261f29-902f-4840-89d9-eab51ee7f092/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-63.i[916,929] [2024-11-28 03:57:12,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:57:12,220 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:57:12,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:12 WrapperNode [2024-11-28 03:57:12,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:57:12,222 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:57:12,222 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:57:12,223 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:57:12,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:12" (1/1) ... [2024-11-28 03:57:12,244 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:12" (1/1) ... [2024-11-28 03:57:12,302 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 216 [2024-11-28 03:57:12,302 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:57:12,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:57:12,303 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:57:12,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:57:12,314 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:12" (1/1) ... [2024-11-28 03:57:12,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:12" (1/1) ... [2024-11-28 03:57:12,320 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:12" (1/1) ... [2024-11-28 03:57:12,344 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:57:12,345 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:12" (1/1) ... [2024-11-28 03:57:12,345 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:12" (1/1) ... [2024-11-28 03:57:12,361 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:12" (1/1) ... [2024-11-28 03:57:12,363 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:12" (1/1) ... [2024-11-28 03:57:12,368 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:12" (1/1) ... [2024-11-28 03:57:12,371 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:12" (1/1) ... [2024-11-28 03:57:12,374 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:12" (1/1) ... [2024-11-28 03:57:12,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:57:12,386 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:57:12,386 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:57:12,386 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:57:12,390 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:12" (1/1) ... [2024-11-28 03:57:12,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:57:12,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0261f29-902f-4840-89d9-eab51ee7f092/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:57:12,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0261f29-902f-4840-89d9-eab51ee7f092/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:57:12,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0261f29-902f-4840-89d9-eab51ee7f092/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:57:12,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:57:12,473 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:57:12,473 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:57:12,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:57:12,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:57:12,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:57:12,568 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:57:12,570 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:57:13,315 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-28 03:57:13,315 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:57:13,334 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:57:13,334 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 03:57:13,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:57:13 BoogieIcfgContainer [2024-11-28 03:57:13,335 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:57:13,339 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:57:13,340 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:57:13,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:57:13,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:57:11" (1/3) ... [2024-11-28 03:57:13,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20307659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:57:13, skipping insertion in model container [2024-11-28 03:57:13,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:57:12" (2/3) ... [2024-11-28 03:57:13,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20307659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:57:13, skipping insertion in model container [2024-11-28 03:57:13,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:57:13" (3/3) ... [2024-11-28 03:57:13,351 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-63.i [2024-11-28 03:57:13,370 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:57:13,373 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_100-1loop_file-63.i that has 2 procedures, 90 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:57:13,446 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:57:13,473 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;@4c15b8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:57:13,474 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:57:13,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 68 states have internal predecessors, (99), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 03:57:13,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 03:57:13,494 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:13,496 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:13,496 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:13,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:13,503 INFO L85 PathProgramCache]: Analyzing trace with hash 360530960, now seen corresponding path program 1 times [2024-11-28 03:57:13,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:13,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064375908] [2024-11-28 03:57:13,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:13,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-28 03:57:13,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:13,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064375908] [2024-11-28 03:57:13,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064375908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:57:13,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448861072] [2024-11-28 03:57:13,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:13,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:57:13,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0261f29-902f-4840-89d9-eab51ee7f092/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:57:13,900 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0261f29-902f-4840-89d9-eab51ee7f092/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:57:13,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0261f29-902f-4840-89d9-eab51ee7f092/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:57:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:14,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:57:14,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:57:14,206 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-28 03:57:14,206 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:57:14,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448861072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:14,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:57:14,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 03:57:14,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159226411] [2024-11-28 03:57:14,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:14,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:57:14,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:14,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:57:14,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:57:14,238 INFO L87 Difference]: Start difference. First operand has 90 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 68 states have internal predecessors, (99), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 03:57:14,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:14,277 INFO L93 Difference]: Finished difference Result 175 states and 293 transitions. [2024-11-28 03:57:14,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:57:14,280 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 144 [2024-11-28 03:57:14,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:14,288 INFO L225 Difference]: With dead ends: 175 [2024-11-28 03:57:14,288 INFO L226 Difference]: Without dead ends: 84 [2024-11-28 03:57:14,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:57:14,295 INFO L435 NwaCegarLoop]: 130 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, 130 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:14,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:57:14,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-28 03:57:14,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-28 03:57:14,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 62 states have internal predecessors, (86), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 03:57:14,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 126 transitions. [2024-11-28 03:57:14,351 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 126 transitions. Word has length 144 [2024-11-28 03:57:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:14,352 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 126 transitions. [2024-11-28 03:57:14,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 03:57:14,352 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 126 transitions. [2024-11-28 03:57:14,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 03:57:14,356 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:14,357 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:14,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0261f29-902f-4840-89d9-eab51ee7f092/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:57:14,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0261f29-902f-4840-89d9-eab51ee7f092/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 03:57:14,558 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:14,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:14,559 INFO L85 PathProgramCache]: Analyzing trace with hash 64732372, now seen corresponding path program 1 times [2024-11-28 03:57:14,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:14,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605137838] [2024-11-28 03:57:14,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:14,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:14,985 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:57:14,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:14,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605137838] [2024-11-28 03:57:14,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605137838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:14,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:14,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:57:14,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963800371] [2024-11-28 03:57:14,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:14,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:57:14,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:14,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:57:14,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:57:14,988 INFO L87 Difference]: Start difference. First operand 84 states and 126 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:15,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:15,026 INFO L93 Difference]: Finished difference Result 166 states and 251 transitions. [2024-11-28 03:57:15,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:57:15,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-28 03:57:15,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:15,028 INFO L225 Difference]: With dead ends: 166 [2024-11-28 03:57:15,029 INFO L226 Difference]: Without dead ends: 85 [2024-11-28 03:57:15,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:57:15,032 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 0 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:15,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:57:15,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-28 03:57:15,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-28 03:57:15,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 63 states have (on average 1.380952380952381) internal successors, (87), 63 states have internal predecessors, (87), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 03:57:15,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 127 transitions. [2024-11-28 03:57:15,046 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 127 transitions. Word has length 144 [2024-11-28 03:57:15,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:15,047 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 127 transitions. [2024-11-28 03:57:15,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:15,047 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 127 transitions. [2024-11-28 03:57:15,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 03:57:15,049 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:15,049 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:15,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:57:15,050 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:15,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:15,050 INFO L85 PathProgramCache]: Analyzing trace with hash 895392564, now seen corresponding path program 1 times [2024-11-28 03:57:15,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:15,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747013190] [2024-11-28 03:57:15,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:15,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:15,323 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:57:15,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:15,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747013190] [2024-11-28 03:57:15,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747013190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:15,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:15,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:57:15,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490133811] [2024-11-28 03:57:15,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:15,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:57:15,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:15,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:57:15,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:57:15,325 INFO L87 Difference]: Start difference. First operand 85 states and 127 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:15,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:15,473 INFO L93 Difference]: Finished difference Result 219 states and 326 transitions. [2024-11-28 03:57:15,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:57:15,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-28 03:57:15,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:15,480 INFO L225 Difference]: With dead ends: 219 [2024-11-28 03:57:15,480 INFO L226 Difference]: Without dead ends: 137 [2024-11-28 03:57:15,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:57:15,485 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 75 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:15,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 233 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:57:15,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-28 03:57:15,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 134. [2024-11-28 03:57:15,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 103 states have (on average 1.3786407766990292) internal successors, (142), 104 states have internal predecessors, (142), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-28 03:57:15,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 198 transitions. [2024-11-28 03:57:15,527 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 198 transitions. Word has length 144 [2024-11-28 03:57:15,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:15,528 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 198 transitions. [2024-11-28 03:57:15,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:15,529 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 198 transitions. [2024-11-28 03:57:15,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 03:57:15,532 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:15,532 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:15,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:57:15,532 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:15,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:15,533 INFO L85 PathProgramCache]: Analyzing trace with hash -952059340, now seen corresponding path program 1 times [2024-11-28 03:57:15,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:15,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651240247] [2024-11-28 03:57:15,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:15,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:16,364 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:57:16,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:16,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651240247] [2024-11-28 03:57:16,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651240247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:16,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:16,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:57:16,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045315961] [2024-11-28 03:57:16,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:16,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:57:16,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:16,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:57:16,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:16,370 INFO L87 Difference]: Start difference. First operand 134 states and 198 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:16,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:16,638 INFO L93 Difference]: Finished difference Result 386 states and 570 transitions. [2024-11-28 03:57:16,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:57:16,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-28 03:57:16,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:16,648 INFO L225 Difference]: With dead ends: 386 [2024-11-28 03:57:16,648 INFO L226 Difference]: Without dead ends: 255 [2024-11-28 03:57:16,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:57:16,653 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 94 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:16,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 353 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:57:16,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-28 03:57:16,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 187. [2024-11-28 03:57:16,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 134 states have (on average 1.335820895522388) internal successors, (179), 135 states have internal predecessors, (179), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-28 03:57:16,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 275 transitions. [2024-11-28 03:57:16,710 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 275 transitions. Word has length 144 [2024-11-28 03:57:16,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:16,712 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 275 transitions. [2024-11-28 03:57:16,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:16,713 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 275 transitions. [2024-11-28 03:57:16,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 03:57:16,716 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:16,720 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:16,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:57:16,720 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:16,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:16,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1086072846, now seen corresponding path program 1 times [2024-11-28 03:57:16,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:16,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895956748] [2024-11-28 03:57:16,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:16,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:29,681 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:57:29,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:29,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895956748] [2024-11-28 03:57:29,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895956748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:29,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:29,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 03:57:29,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133219288] [2024-11-28 03:57:29,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:29,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:57:29,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:29,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:57:29,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:57:29,685 INFO L87 Difference]: Start difference. First operand 187 states and 275 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:30,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:30,954 INFO L93 Difference]: Finished difference Result 533 states and 772 transitions. [2024-11-28 03:57:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:57:30,956 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-28 03:57:30,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:30,963 INFO L225 Difference]: With dead ends: 533 [2024-11-28 03:57:30,964 INFO L226 Difference]: Without dead ends: 402 [2024-11-28 03:57:30,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:57:30,965 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 239 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:30,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 563 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:57:30,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-11-28 03:57:30,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 213. [2024-11-28 03:57:30,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 160 states have (on average 1.35625) internal successors, (217), 161 states have internal predecessors, (217), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-28 03:57:30,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 313 transitions. [2024-11-28 03:57:30,994 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 313 transitions. Word has length 144 [2024-11-28 03:57:30,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:30,995 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 313 transitions. [2024-11-28 03:57:30,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:30,995 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 313 transitions. [2024-11-28 03:57:30,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 03:57:30,998 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:30,998 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:30,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:57:30,998 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:30,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:30,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1895419472, now seen corresponding path program 1 times [2024-11-28 03:57:30,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:30,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323350650] [2024-11-28 03:57:31,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:31,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:57:38,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:38,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323350650] [2024-11-28 03:57:38,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323350650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:38,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:38,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 03:57:38,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987184999] [2024-11-28 03:57:38,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:38,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:57:38,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:38,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:57:38,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:57:38,553 INFO L87 Difference]: Start difference. First operand 213 states and 313 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:41,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:41,294 INFO L93 Difference]: Finished difference Result 570 states and 828 transitions. [2024-11-28 03:57:41,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:57:41,296 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-28 03:57:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:41,300 INFO L225 Difference]: With dead ends: 570 [2024-11-28 03:57:41,300 INFO L226 Difference]: Without dead ends: 413 [2024-11-28 03:57:41,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:57:41,303 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 510 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:41,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 934 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 03:57:41,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2024-11-28 03:57:41,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 251. [2024-11-28 03:57:41,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 198 states have (on average 1.3888888888888888) internal successors, (275), 199 states have internal predecessors, (275), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-28 03:57:41,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 371 transitions. [2024-11-28 03:57:41,336 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 371 transitions. Word has length 144 [2024-11-28 03:57:41,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:41,337 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 371 transitions. [2024-11-28 03:57:41,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:41,338 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 371 transitions. [2024-11-28 03:57:41,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 03:57:41,340 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:41,340 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:41,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:57:41,341 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:41,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:41,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1214749744, now seen corresponding path program 1 times [2024-11-28 03:57:41,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:41,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557030479] [2024-11-28 03:57:41,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:41,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:47,440 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:57:47,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:47,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557030479] [2024-11-28 03:57:47,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557030479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:47,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:47,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 03:57:47,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011185309] [2024-11-28 03:57:47,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:47,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:57:47,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:47,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:57:47,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:57:47,444 INFO L87 Difference]: Start difference. First operand 251 states and 371 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:48,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:48,737 INFO L93 Difference]: Finished difference Result 718 states and 1054 transitions. [2024-11-28 03:57:48,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:57:48,738 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-28 03:57:48,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:48,742 INFO L225 Difference]: With dead ends: 718 [2024-11-28 03:57:48,742 INFO L226 Difference]: Without dead ends: 524 [2024-11-28 03:57:48,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:57:48,744 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 444 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:48,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 649 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:57:48,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2024-11-28 03:57:48,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 306. [2024-11-28 03:57:48,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 253 states have (on average 1.4110671936758894) internal successors, (357), 254 states have internal predecessors, (357), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-28 03:57:48,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 453 transitions. [2024-11-28 03:57:48,778 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 453 transitions. Word has length 144 [2024-11-28 03:57:48,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:48,778 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 453 transitions. [2024-11-28 03:57:48,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:48,779 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 453 transitions. [2024-11-28 03:57:48,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 03:57:48,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:48,781 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:48,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:57:48,781 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:48,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:48,782 INFO L85 PathProgramCache]: Analyzing trace with hash 769680882, now seen corresponding path program 1 times [2024-11-28 03:57:48,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:48,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18816340] [2024-11-28 03:57:48,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:48,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:57:49,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:49,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18816340] [2024-11-28 03:57:49,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18816340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:49,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:49,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:57:49,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948494378] [2024-11-28 03:57:49,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:49,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:57:49,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:49,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:57:49,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:49,222 INFO L87 Difference]: Start difference. First operand 306 states and 453 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:49,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:49,471 INFO L93 Difference]: Finished difference Result 686 states and 1016 transitions. [2024-11-28 03:57:49,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:57:49,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-28 03:57:49,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:49,476 INFO L225 Difference]: With dead ends: 686 [2024-11-28 03:57:49,477 INFO L226 Difference]: Without dead ends: 463 [2024-11-28 03:57:49,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:49,479 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 191 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:49,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 293 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:57:49,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-28 03:57:49,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 322. [2024-11-28 03:57:49,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 269 states have (on average 1.412639405204461) internal successors, (380), 270 states have internal predecessors, (380), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-28 03:57:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 476 transitions. [2024-11-28 03:57:49,529 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 476 transitions. Word has length 144 [2024-11-28 03:57:49,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:49,530 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 476 transitions. [2024-11-28 03:57:49,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:49,530 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 476 transitions. [2024-11-28 03:57:49,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 03:57:49,533 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:49,533 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:49,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:57:49,534 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:49,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:49,535 INFO L85 PathProgramCache]: Analyzing trace with hash -663371020, now seen corresponding path program 1 times [2024-11-28 03:57:49,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:49,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693277925] [2024-11-28 03:57:49,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:49,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:49,852 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:57:49,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:49,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693277925] [2024-11-28 03:57:49,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693277925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:49,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:49,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:57:49,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496536370] [2024-11-28 03:57:49,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:49,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:57:49,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:49,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:57:49,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:49,855 INFO L87 Difference]: Start difference. First operand 322 states and 476 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:50,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:50,097 INFO L93 Difference]: Finished difference Result 654 states and 964 transitions. [2024-11-28 03:57:50,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:57:50,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-28 03:57:50,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:50,102 INFO L225 Difference]: With dead ends: 654 [2024-11-28 03:57:50,102 INFO L226 Difference]: Without dead ends: 450 [2024-11-28 03:57:50,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:50,104 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 157 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:50,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 321 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:57:50,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2024-11-28 03:57:50,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 321. [2024-11-28 03:57:50,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 268 states have (on average 1.4029850746268657) internal successors, (376), 269 states have internal predecessors, (376), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-28 03:57:50,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 472 transitions. [2024-11-28 03:57:50,153 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 472 transitions. Word has length 144 [2024-11-28 03:57:50,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:50,156 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 472 transitions. [2024-11-28 03:57:50,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:50,156 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 472 transitions. [2024-11-28 03:57:50,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 03:57:50,161 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:50,162 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:50,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:57:50,162 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:50,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:50,163 INFO L85 PathProgramCache]: Analyzing trace with hash 2001729334, now seen corresponding path program 1 times [2024-11-28 03:57:50,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:50,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993099370] [2024-11-28 03:57:50,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:50,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:50,551 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:57:50,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:50,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993099370] [2024-11-28 03:57:50,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993099370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:50,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:50,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:57:50,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524970559] [2024-11-28 03:57:50,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:50,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:57:50,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:50,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:57:50,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:57:50,554 INFO L87 Difference]: Start difference. First operand 321 states and 472 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:50,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:50,840 INFO L93 Difference]: Finished difference Result 653 states and 958 transitions. [2024-11-28 03:57:50,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:57:50,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-28 03:57:50,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:50,845 INFO L225 Difference]: With dead ends: 653 [2024-11-28 03:57:50,845 INFO L226 Difference]: Without dead ends: 449 [2024-11-28 03:57:50,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:57:50,847 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 125 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:50,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 525 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:57:50,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2024-11-28 03:57:50,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 333. [2024-11-28 03:57:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 280 states have (on average 1.4071428571428573) internal successors, (394), 281 states have internal predecessors, (394), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-28 03:57:50,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 490 transitions. [2024-11-28 03:57:50,892 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 490 transitions. Word has length 144 [2024-11-28 03:57:50,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:50,892 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 490 transitions. [2024-11-28 03:57:50,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:50,893 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 490 transitions. [2024-11-28 03:57:50,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 03:57:50,895 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:50,895 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:50,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:57:50,896 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:50,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:50,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1192382708, now seen corresponding path program 1 times [2024-11-28 03:57:50,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:50,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588236756] [2024-11-28 03:57:50,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:50,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:57:56,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:56,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588236756] [2024-11-28 03:57:56,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588236756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:56,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:56,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 03:57:56,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999502605] [2024-11-28 03:57:56,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:56,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:57:56,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:56,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:57:56,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:57:56,675 INFO L87 Difference]: Start difference. First operand 333 states and 490 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:58,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:58,711 INFO L93 Difference]: Finished difference Result 879 states and 1257 transitions. [2024-11-28 03:57:58,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:57:58,711 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-28 03:57:58,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:58,716 INFO L225 Difference]: With dead ends: 879 [2024-11-28 03:57:58,717 INFO L226 Difference]: Without dead ends: 663 [2024-11-28 03:57:58,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:57:58,720 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 547 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:58,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 968 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:57:58,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2024-11-28 03:57:58,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 464. [2024-11-28 03:57:58,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 404 states have (on average 1.4108910891089108) internal successors, (570), 407 states have internal predecessors, (570), 52 states have call successors, (52), 7 states have call predecessors, (52), 7 states have return successors, (52), 49 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-28 03:57:58,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 674 transitions. [2024-11-28 03:57:58,783 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 674 transitions. Word has length 144 [2024-11-28 03:57:58,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:58,784 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 674 transitions. [2024-11-28 03:57:58,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:58,785 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 674 transitions. [2024-11-28 03:57:58,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 03:57:58,791 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:58,792 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:58,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:57:58,792 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:58,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:58,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1255501285, now seen corresponding path program 1 times [2024-11-28 03:57:58,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:58,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8201090] [2024-11-28 03:57:58,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:58,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:58,976 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:57:58,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:58,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8201090] [2024-11-28 03:57:58,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8201090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:58,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:58,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:57:58,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423406879] [2024-11-28 03:57:58,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:58,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:57:58,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:58,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:57:58,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:58,979 INFO L87 Difference]: Start difference. First operand 464 states and 674 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:59,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:59,096 INFO L93 Difference]: Finished difference Result 997 states and 1442 transitions. [2024-11-28 03:57:59,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:57:59,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-28 03:57:59,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:59,102 INFO L225 Difference]: With dead ends: 997 [2024-11-28 03:57:59,102 INFO L226 Difference]: Without dead ends: 706 [2024-11-28 03:57:59,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:59,104 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 64 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:59,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 341 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:57:59,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2024-11-28 03:57:59,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 702. [2024-11-28 03:57:59,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 621 states have (on average 1.391304347826087) internal successors, (864), 628 states have internal predecessors, (864), 68 states have call successors, (68), 12 states have call predecessors, (68), 12 states have return successors, (68), 61 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-28 03:57:59,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1000 transitions. [2024-11-28 03:57:59,192 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1000 transitions. Word has length 145 [2024-11-28 03:57:59,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:59,192 INFO L471 AbstractCegarLoop]: Abstraction has 702 states and 1000 transitions. [2024-11-28 03:57:59,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:59,193 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1000 transitions. [2024-11-28 03:57:59,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 03:57:59,196 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:59,197 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:59,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:57:59,197 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:59,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:59,198 INFO L85 PathProgramCache]: Analyzing trace with hash -380043854, now seen corresponding path program 1 times [2024-11-28 03:57:59,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:59,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468363313] [2024-11-28 03:57:59,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:59,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:59,548 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:57:59,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:59,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468363313] [2024-11-28 03:57:59,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468363313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:59,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:59,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:57:59,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908454315] [2024-11-28 03:57:59,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:59,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:57:59,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:59,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:57:59,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:59,552 INFO L87 Difference]: Start difference. First operand 702 states and 1000 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:59,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:59,840 INFO L93 Difference]: Finished difference Result 1376 states and 1956 transitions. [2024-11-28 03:57:59,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:57:59,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-28 03:57:59,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:59,847 INFO L225 Difference]: With dead ends: 1376 [2024-11-28 03:57:59,847 INFO L226 Difference]: Without dead ends: 907 [2024-11-28 03:57:59,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:57:59,850 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 143 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:59,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 414 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:57:59,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2024-11-28 03:57:59,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 482. [2024-11-28 03:57:59,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 422 states have (on average 1.353080568720379) internal successors, (571), 425 states have internal predecessors, (571), 50 states have call successors, (50), 9 states have call predecessors, (50), 9 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-28 03:57:59,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 671 transitions. [2024-11-28 03:57:59,922 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 671 transitions. Word has length 145 [2024-11-28 03:57:59,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:59,922 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 671 transitions. [2024-11-28 03:57:59,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:59,923 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 671 transitions. [2024-11-28 03:57:59,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 03:57:59,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:59,925 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:59,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:57:59,926 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:59,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:59,927 INFO L85 PathProgramCache]: Analyzing trace with hash -2009910796, now seen corresponding path program 1 times [2024-11-28 03:57:59,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:59,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377182744] [2024-11-28 03:57:59,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:59,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:01,358 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:58:01,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:01,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377182744] [2024-11-28 03:58:01,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377182744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:01,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:01,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 03:58:01,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364903653] [2024-11-28 03:58:01,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:01,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:58:01,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:01,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:58:01,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:58:01,361 INFO L87 Difference]: Start difference. First operand 482 states and 671 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:58:03,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:03,706 INFO L93 Difference]: Finished difference Result 1369 states and 1891 transitions. [2024-11-28 03:58:03,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 03:58:03,706 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-28 03:58:03,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:03,713 INFO L225 Difference]: With dead ends: 1369 [2024-11-28 03:58:03,713 INFO L226 Difference]: Without dead ends: 988 [2024-11-28 03:58:03,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:58:03,715 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 404 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:03,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 1026 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:58:03,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2024-11-28 03:58:03,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 580. [2024-11-28 03:58:03,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 520 states have (on average 1.3826923076923077) internal successors, (719), 523 states have internal predecessors, (719), 50 states have call successors, (50), 9 states have call predecessors, (50), 9 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-28 03:58:03,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 819 transitions. [2024-11-28 03:58:03,803 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 819 transitions. Word has length 145 [2024-11-28 03:58:03,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:03,805 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 819 transitions. [2024-11-28 03:58:03,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:58:03,805 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 819 transitions. [2024-11-28 03:58:03,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 03:58:03,807 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:03,807 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:03,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:58:03,808 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:03,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:03,808 INFO L85 PathProgramCache]: Analyzing trace with hash 852004598, now seen corresponding path program 1 times [2024-11-28 03:58:03,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:03,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101804727] [2024-11-28 03:58:03,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:03,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:58:04,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:04,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101804727] [2024-11-28 03:58:04,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101804727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:04,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:04,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:58:04,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105260210] [2024-11-28 03:58:04,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:04,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:58:04,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:04,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:58:04,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:58:04,182 INFO L87 Difference]: Start difference. First operand 580 states and 819 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:58:04,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:04,557 INFO L93 Difference]: Finished difference Result 1238 states and 1756 transitions. [2024-11-28 03:58:04,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:58:04,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-28 03:58:04,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:04,563 INFO L225 Difference]: With dead ends: 1238 [2024-11-28 03:58:04,563 INFO L226 Difference]: Without dead ends: 940 [2024-11-28 03:58:04,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:58:04,566 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 203 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:04,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 509 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:58:04,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2024-11-28 03:58:04,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 597. [2024-11-28 03:58:04,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 537 states have (on average 1.3854748603351956) internal successors, (744), 540 states have internal predecessors, (744), 50 states have call successors, (50), 9 states have call predecessors, (50), 9 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-28 03:58:04,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 844 transitions. [2024-11-28 03:58:04,638 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 844 transitions. Word has length 145 [2024-11-28 03:58:04,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:04,639 INFO L471 AbstractCegarLoop]: Abstraction has 597 states and 844 transitions. [2024-11-28 03:58:04,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:58:04,639 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 844 transitions. [2024-11-28 03:58:04,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 03:58:04,641 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:04,641 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:04,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:58:04,641 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:04,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:04,642 INFO L85 PathProgramCache]: Analyzing trace with hash 42657972, now seen corresponding path program 1 times [2024-11-28 03:58:04,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:04,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425255393] [2024-11-28 03:58:04,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:04,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:08,630 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:58:08,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:08,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425255393] [2024-11-28 03:58:08,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425255393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:08,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:08,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:58:08,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511121691] [2024-11-28 03:58:08,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:08,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:58:08,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:08,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:58:08,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:58:08,632 INFO L87 Difference]: Start difference. First operand 597 states and 844 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:58:09,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:09,504 INFO L93 Difference]: Finished difference Result 1099 states and 1548 transitions. [2024-11-28 03:58:09,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:58:09,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-28 03:58:09,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:09,509 INFO L225 Difference]: With dead ends: 1099 [2024-11-28 03:58:09,509 INFO L226 Difference]: Without dead ends: 805 [2024-11-28 03:58:09,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:58:09,511 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 204 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:09,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 412 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:58:09,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-11-28 03:58:09,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 614. [2024-11-28 03:58:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 554 states have (on average 1.3826714801444044) internal successors, (766), 557 states have internal predecessors, (766), 50 states have call successors, (50), 9 states have call predecessors, (50), 9 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-28 03:58:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 866 transitions. [2024-11-28 03:58:09,586 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 866 transitions. Word has length 145 [2024-11-28 03:58:09,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:09,587 INFO L471 AbstractCegarLoop]: Abstraction has 614 states and 866 transitions. [2024-11-28 03:58:09,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:58:09,587 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 866 transitions. [2024-11-28 03:58:09,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 03:58:09,589 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:09,589 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:09,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:58:09,590 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:09,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:09,591 INFO L85 PathProgramCache]: Analyzing trace with hash -777862344, now seen corresponding path program 1 times [2024-11-28 03:58:09,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:09,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160324871] [2024-11-28 03:58:09,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:09,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:10,011 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:58:10,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:10,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160324871] [2024-11-28 03:58:10,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160324871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:10,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:10,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:58:10,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004738931] [2024-11-28 03:58:10,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:10,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:58:10,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:10,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:58:10,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:58:10,017 INFO L87 Difference]: Start difference. First operand 614 states and 866 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:58:10,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:10,391 INFO L93 Difference]: Finished difference Result 1334 states and 1884 transitions. [2024-11-28 03:58:10,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:58:10,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-28 03:58:10,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:10,397 INFO L225 Difference]: With dead ends: 1334 [2024-11-28 03:58:10,397 INFO L226 Difference]: Without dead ends: 1015 [2024-11-28 03:58:10,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:58:10,399 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 216 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:10,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 504 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:58:10,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2024-11-28 03:58:10,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 621. [2024-11-28 03:58:10,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 561 states have (on average 1.3814616755793225) internal successors, (775), 564 states have internal predecessors, (775), 50 states have call successors, (50), 9 states have call predecessors, (50), 9 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-28 03:58:10,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 875 transitions. [2024-11-28 03:58:10,483 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 875 transitions. Word has length 145 [2024-11-28 03:58:10,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:10,484 INFO L471 AbstractCegarLoop]: Abstraction has 621 states and 875 transitions. [2024-11-28 03:58:10,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:58:10,484 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 875 transitions. [2024-11-28 03:58:10,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 03:58:10,488 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:10,488 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:10,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 03:58:10,488 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:10,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:10,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1303903437, now seen corresponding path program 1 times [2024-11-28 03:58:10,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:10,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615670553] [2024-11-28 03:58:10,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:10,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:38,896 WARN L286 SmtUtils]: Spent 7.18s on a formula simplification. DAG size of input: 170 DAG size of output: 166 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:59:07,096 WARN L286 SmtUtils]: Spent 9.67s on a formula simplification. DAG size of input: 174 DAG size of output: 170 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:59:59,418 WARN L286 SmtUtils]: Spent 14.31s on a formula simplification. DAG size of input: 188 DAG size of output: 179 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:00:46,900 WARN L286 SmtUtils]: Spent 30.93s on a formula simplification. DAG size of input: 190 DAG size of output: 181 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:01:02,643 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:01:02,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:02,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615670553] [2024-11-28 04:01:02,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615670553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:02,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:02,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 04:01:02,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503279542] [2024-11-28 04:01:02,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:02,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:01:02,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:02,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:01:02,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:01:02,645 INFO L87 Difference]: Start difference. First operand 621 states and 875 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:01:14,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 04:01:16,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 04:01:31,340 WARN L286 SmtUtils]: Spent 11.39s on a formula simplification. DAG size of input: 185 DAG size of output: 175 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:01:43,544 WARN L286 SmtUtils]: Spent 5.50s on a formula simplification that was a NOOP. DAG size: 173 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:01:51,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 04:01:52,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:52,908 INFO L93 Difference]: Finished difference Result 1181 states and 1665 transitions. [2024-11-28 04:01:52,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:01:52,908 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2024-11-28 04:01:52,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:52,912 INFO L225 Difference]: With dead ends: 1181 [2024-11-28 04:01:52,912 INFO L226 Difference]: Without dead ends: 1179 [2024-11-28 04:01:52,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 94.8s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:01:52,913 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 294 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:52,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 872 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 25.1s Time] [2024-11-28 04:01:52,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2024-11-28 04:01:52,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 744. [2024-11-28 04:01:52,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 684 states have (on average 1.3888888888888888) internal successors, (950), 687 states have internal predecessors, (950), 50 states have call successors, (50), 9 states have call predecessors, (50), 9 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-28 04:01:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1050 transitions. [2024-11-28 04:01:52,995 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1050 transitions. Word has length 146 [2024-11-28 04:01:52,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:52,995 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 1050 transitions. [2024-11-28 04:01:52,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:01:52,996 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1050 transitions. [2024-11-28 04:01:52,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 04:01:52,997 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:52,998 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:52,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 04:01:52,998 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:52,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:52,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1562068875, now seen corresponding path program 1 times [2024-11-28 04:01:52,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:52,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717367314] [2024-11-28 04:01:52,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:52,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:21,953 WARN L286 SmtUtils]: Spent 9.05s on a formula simplification. DAG size of input: 172 DAG size of output: 168 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:02:47,142 WARN L286 SmtUtils]: Spent 12.54s on a formula simplification. DAG size of input: 190 DAG size of output: 186 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:03:05,794 WARN L286 SmtUtils]: Spent 7.64s on a formula simplification that was a NOOP. DAG size: 162 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:03:19,617 WARN L286 SmtUtils]: Spent 6.43s on a formula simplification that was a NOOP. DAG size: 163 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:03:50,135 WARN L286 SmtUtils]: Spent 8.90s on a formula simplification that was a NOOP. DAG size: 170 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:04:14,143 WARN L286 SmtUtils]: Spent 11.64s on a formula simplification. DAG size of input: 180 DAG size of output: 175 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:04:32,321 WARN L286 SmtUtils]: Spent 6.53s on a formula simplification. DAG size of input: 182 DAG size of output: 177 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:04:40,434 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:04:40,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:40,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717367314] [2024-11-28 04:04:40,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717367314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:40,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:40,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-28 04:04:40,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146677187] [2024-11-28 04:04:40,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:40,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:04:40,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:40,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:04:40,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:04:40,437 INFO L87 Difference]: Start difference. First operand 744 states and 1050 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:04:58,263 WARN L286 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 168 DAG size of output: 165 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:05:10,687 WARN L286 SmtUtils]: Spent 11.97s on a formula simplification. DAG size of input: 186 DAG size of output: 183 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:05:23,131 WARN L286 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 180 DAG size of output: 166 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:05:25,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 04:05:37,256 WARN L286 SmtUtils]: Spent 11.06s on a formula simplification. DAG size of input: 182 DAG size of output: 172 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:05:45,106 WARN L286 SmtUtils]: Spent 7.53s on a formula simplification. DAG size of input: 185 DAG size of output: 171 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:05:48,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 04:05:56,400 WARN L286 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:06:13,837 WARN L286 SmtUtils]: Spent 8.81s on a formula simplification that was a NOOP. DAG size: 170 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:06:14,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 04:06:22,858 WARN L286 SmtUtils]: Spent 7.76s on a formula simplification. DAG size of input: 183 DAG size of output: 169 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:06:34,979 WARN L286 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 183 DAG size of output: 169 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:06:47,445 WARN L286 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 171 DAG size of output: 169 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:06:56,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:06:56,314 INFO L93 Difference]: Finished difference Result 1198 states and 1680 transitions. [2024-11-28 04:06:56,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 04:06:56,314 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2024-11-28 04:06:56,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:06:56,319 INFO L225 Difference]: With dead ends: 1198 [2024-11-28 04:06:56,319 INFO L226 Difference]: Without dead ends: 1196 [2024-11-28 04:06:56,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 171.2s TimeCoverageRelationStatistics Valid=298, Invalid=824, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 04:06:56,321 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 388 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:06:56,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 978 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 38.3s Time] [2024-11-28 04:06:56,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2024-11-28 04:06:56,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 778. [2024-11-28 04:06:56,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 718 states have (on average 1.392757660167131) internal successors, (1000), 721 states have internal predecessors, (1000), 50 states have call successors, (50), 9 states have call predecessors, (50), 9 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-28 04:06:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1100 transitions. [2024-11-28 04:06:56,409 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1100 transitions. Word has length 146 [2024-11-28 04:06:56,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:06:56,409 INFO L471 AbstractCegarLoop]: Abstraction has 778 states and 1100 transitions. [2024-11-28 04:06:56,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:06:56,410 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1100 transitions. [2024-11-28 04:06:56,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 04:06:56,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:06:56,412 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:06:56,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 04:06:56,412 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:06:56,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:06:56,413 INFO L85 PathProgramCache]: Analyzing trace with hash 486254987, now seen corresponding path program 1 times [2024-11-28 04:06:56,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:06:56,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887404257] [2024-11-28 04:06:56,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:56,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:06:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:35,908 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:07:35,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:35,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887404257] [2024-11-28 04:07:35,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887404257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:35,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:35,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 04:07:35,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047139979] [2024-11-28 04:07:35,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:35,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:07:35,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:35,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:07:35,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:07:35,910 INFO L87 Difference]: Start difference. First operand 778 states and 1100 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:07:44,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:44,878 INFO L93 Difference]: Finished difference Result 1148 states and 1604 transitions. [2024-11-28 04:07:44,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:07:44,879 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2024-11-28 04:07:44,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:44,883 INFO L225 Difference]: With dead ends: 1148 [2024-11-28 04:07:44,883 INFO L226 Difference]: Without dead ends: 1146 [2024-11-28 04:07:44,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:07:44,884 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 291 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:44,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 735 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 04:07:44,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2024-11-28 04:07:44,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 744. [2024-11-28 04:07:44,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 684 states have (on average 1.3888888888888888) internal successors, (950), 687 states have internal predecessors, (950), 50 states have call successors, (50), 9 states have call predecessors, (50), 9 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-28 04:07:44,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1050 transitions. [2024-11-28 04:07:44,954 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1050 transitions. Word has length 146 [2024-11-28 04:07:44,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:44,955 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 1050 transitions. [2024-11-28 04:07:44,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:07:44,955 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1050 transitions. [2024-11-28 04:07:44,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 04:07:44,956 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:44,956 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:44,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 04:07:44,957 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:44,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:44,957 INFO L85 PathProgramCache]: Analyzing trace with hash 466369871, now seen corresponding path program 1 times [2024-11-28 04:07:44,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:44,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677105652] [2024-11-28 04:07:44,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:44,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:08:12,617 WARN L286 SmtUtils]: Spent 7.37s on a formula simplification. DAG size of input: 175 DAG size of output: 168 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:08:38,283 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification. DAG size of input: 196 DAG size of output: 192 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:08:51,592 WARN L286 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 198 DAG size of output: 194 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:09:11,814 WARN L286 SmtUtils]: Spent 10.22s on a formula simplification. DAG size of input: 180 DAG size of output: 176 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:09:43,770 WARN L286 SmtUtils]: Spent 11.31s on a formula simplification. DAG size of input: 217 DAG size of output: 202 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:10:09,821 WARN L286 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 219 DAG size of output: 204 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:10:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:10:20,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:20,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677105652] [2024-11-28 04:10:20,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677105652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:20,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:20,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-28 04:10:20,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126059279] [2024-11-28 04:10:20,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:20,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:10:20,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:20,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:10:20,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:10:20,688 INFO L87 Difference]: Start difference. First operand 744 states and 1050 transitions. Second operand has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:10:43,802 WARN L286 SmtUtils]: Spent 9.30s on a formula simplification. DAG size of input: 178 DAG size of output: 177 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:11:07,826 WARN L286 SmtUtils]: Spent 13.75s on a formula simplification. DAG size of input: 246 DAG size of output: 184 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:11:16,048 WARN L286 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 241 DAG size of output: 180 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:11:24,080 WARN L286 SmtUtils]: Spent 6.83s on a formula simplification that was a NOOP. DAG size: 186 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:11:37,936 WARN L286 SmtUtils]: Spent 12.15s on a formula simplification. DAG size of input: 244 DAG size of output: 182 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)