./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-45.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-45.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2db33e14cce996f3ff7abd9391c3db4ba409c9c54c5b298c8b705984adf93aa7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:41:28,162 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:41:28,277 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:41:28,284 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:41:28,284 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:41:28,325 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:41:28,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:41:28,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:41:28,328 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:41:28,328 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:41:28,329 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:41:28,330 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:41:28,330 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:41:28,330 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:41:28,331 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:41:28,332 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:41:28,332 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:41:28,332 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:41:28,332 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:41:28,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:41:28,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:41:28,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:41:28,333 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:41:28,333 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:41:28,333 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:41:28,333 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:41:28,333 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:41:28,333 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:41:28,333 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:41:28,333 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:41:28,334 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:41:28,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:41:28,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:41:28,334 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:41:28,334 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:41:28,334 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:41:28,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:41:28,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:41:28,334 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:41:28,334 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:41:28,335 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:41:28,335 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:41:28,335 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:41:28,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:41:28,335 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:41:28,335 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:41:28,335 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:41:28,335 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:41:28,335 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_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2db33e14cce996f3ff7abd9391c3db4ba409c9c54c5b298c8b705984adf93aa7 [2024-11-24 01:41:28,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:41:28,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:41:28,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:41:28,734 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:41:28,735 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:41:28,736 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-45.i [2024-11-24 01:41:32,327 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC/data/c9ff53525/cbeb354a53ff4a6fa2c072362d403a69/FLAG7724fc743 [2024-11-24 01:41:32,777 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:41:32,782 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-45.i [2024-11-24 01:41:32,804 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC/data/c9ff53525/cbeb354a53ff4a6fa2c072362d403a69/FLAG7724fc743 [2024-11-24 01:41:32,830 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC/data/c9ff53525/cbeb354a53ff4a6fa2c072362d403a69 [2024-11-24 01:41:32,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:41:32,837 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:41:32,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:41:32,840 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:41:32,848 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:41:32,849 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:41:32" (1/1) ... [2024-11-24 01:41:32,852 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e7636b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:32, skipping insertion in model container [2024-11-24 01:41:32,853 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:41:32" (1/1) ... [2024-11-24 01:41:32,892 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:41:33,106 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_a9439b6e-7fd1-41a9-9e78-298b3d885970/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-45.i[919,932] [2024-11-24 01:41:33,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:41:33,252 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:41:33,271 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_a9439b6e-7fd1-41a9-9e78-298b3d885970/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-45.i[919,932] [2024-11-24 01:41:33,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:41:33,365 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:41:33,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:33 WrapperNode [2024-11-24 01:41:33,366 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:41:33,368 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:41:33,368 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:41:33,368 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:41:33,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:33" (1/1) ... [2024-11-24 01:41:33,401 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:33" (1/1) ... [2024-11-24 01:41:33,473 INFO L138 Inliner]: procedures = 26, calls = 48, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 218 [2024-11-24 01:41:33,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:41:33,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:41:33,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:41:33,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:41:33,492 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:33" (1/1) ... [2024-11-24 01:41:33,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:33" (1/1) ... [2024-11-24 01:41:33,497 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:33" (1/1) ... [2024-11-24 01:41:33,528 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 01:41:33,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:33" (1/1) ... [2024-11-24 01:41:33,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:33" (1/1) ... [2024-11-24 01:41:33,550 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:33" (1/1) ... [2024-11-24 01:41:33,551 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:33" (1/1) ... [2024-11-24 01:41:33,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:33" (1/1) ... [2024-11-24 01:41:33,566 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:33" (1/1) ... [2024-11-24 01:41:33,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:33" (1/1) ... [2024-11-24 01:41:33,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:41:33,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:41:33,577 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:41:33,577 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:41:33,581 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:33" (1/1) ... [2024-11-24 01:41:33,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:41:33,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:41:33,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:41:33,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:41:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:41:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:41:33,665 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:41:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:41:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:41:33,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:41:33,809 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:41:33,811 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:41:34,425 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-24 01:41:34,425 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:41:34,439 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:41:34,439 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:41:34,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:41:34 BoogieIcfgContainer [2024-11-24 01:41:34,440 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:41:34,443 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:41:34,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:41:34,449 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:41:34,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:41:32" (1/3) ... [2024-11-24 01:41:34,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108d560c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:41:34, skipping insertion in model container [2024-11-24 01:41:34,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:33" (2/3) ... [2024-11-24 01:41:34,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108d560c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:41:34, skipping insertion in model container [2024-11-24 01:41:34,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:41:34" (3/3) ... [2024-11-24 01:41:34,453 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-45.i [2024-11-24 01:41:34,473 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:41:34,478 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-45.i that has 2 procedures, 98 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:41:34,558 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:41:34,572 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;@14f0ed97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:41:34,572 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:41:34,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 60 states have (on average 1.4) internal successors, (84), 61 states have internal predecessors, (84), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-24 01:41:34,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-24 01:41:34,604 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:41:34,605 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:41:34,605 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:41:34,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:41:34,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1319570276, now seen corresponding path program 1 times [2024-11-24 01:41:34,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:41:34,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874068504] [2024-11-24 01:41:34,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:41:34,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:41:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:41:35,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2024-11-24 01:41:35,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:41:35,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874068504] [2024-11-24 01:41:35,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874068504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:41:35,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128162748] [2024-11-24 01:41:35,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:41:35,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:41:35,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:41:35,185 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:41:35,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:41:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:41:35,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:41:35,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:41:35,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2024-11-24 01:41:35,600 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:41:35,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128162748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:41:35,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:41:35,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 01:41:35,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406228891] [2024-11-24 01:41:35,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:41:35,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:41:35,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:41:35,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:41:35,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:41:35,648 INFO L87 Difference]: Start difference. First operand has 98 states, 60 states have (on average 1.4) internal successors, (84), 61 states have internal predecessors, (84), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-24 01:41:35,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:41:35,703 INFO L93 Difference]: Finished difference Result 189 states and 337 transitions. [2024-11-24 01:41:35,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:41:35,705 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) Word has length 222 [2024-11-24 01:41:35,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:41:35,713 INFO L225 Difference]: With dead ends: 189 [2024-11-24 01:41:35,713 INFO L226 Difference]: Without dead ends: 94 [2024-11-24 01:41:35,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:41:35,721 INFO L435 NwaCegarLoop]: 146 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, 146 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:41:35,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:41:35,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-24 01:41:35,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-24 01:41:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 57 states have internal predecessors, (76), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-24 01:41:35,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 146 transitions. [2024-11-24 01:41:35,787 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 146 transitions. Word has length 222 [2024-11-24 01:41:35,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:41:35,787 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 146 transitions. [2024-11-24 01:41:35,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-24 01:41:35,788 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 146 transitions. [2024-11-24 01:41:35,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-24 01:41:35,797 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:41:35,797 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:41:35,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 01:41:35,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9439b6e-7fd1-41a9-9e78-298b3d885970/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 01:41:35,999 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:41:35,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:41:36,000 INFO L85 PathProgramCache]: Analyzing trace with hash -594497050, now seen corresponding path program 1 times [2024-11-24 01:41:36,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:41:36,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609048761] [2024-11-24 01:41:36,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:41:36,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:41:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:41:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-24 01:41:36,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:41:36,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609048761] [2024-11-24 01:41:36,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609048761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:41:36,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:41:36,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:41:36,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673090796] [2024-11-24 01:41:36,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:41:36,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:41:36,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:41:36,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:41:36,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:41:36,576 INFO L87 Difference]: Start difference. First operand 94 states and 146 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-24 01:41:36,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:41:36,687 INFO L93 Difference]: Finished difference Result 271 states and 422 transitions. [2024-11-24 01:41:36,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:41:36,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 222 [2024-11-24 01:41:36,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:41:36,693 INFO L225 Difference]: With dead ends: 271 [2024-11-24 01:41:36,693 INFO L226 Difference]: Without dead ends: 180 [2024-11-24 01:41:36,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:41:36,695 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 131 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:41:36,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 282 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:41:36,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-24 01:41:36,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2024-11-24 01:41:36,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 105 states have (on average 1.2666666666666666) internal successors, (133), 105 states have internal predecessors, (133), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-24 01:41:36,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 273 transitions. [2024-11-24 01:41:36,749 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 273 transitions. Word has length 222 [2024-11-24 01:41:36,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:41:36,750 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 273 transitions. [2024-11-24 01:41:36,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-24 01:41:36,750 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 273 transitions. [2024-11-24 01:41:36,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-24 01:41:36,755 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:41:36,755 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:41:36,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:41:36,756 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:41:36,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:41:36,756 INFO L85 PathProgramCache]: Analyzing trace with hash -825783837, now seen corresponding path program 1 times [2024-11-24 01:41:36,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:41:36,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884325487] [2024-11-24 01:41:36,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:41:36,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:41:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:44:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-24 01:44:41,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:44:41,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884325487] [2024-11-24 01:44:41,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884325487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:44:41,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:44:41,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-24 01:44:41,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809753841] [2024-11-24 01:44:41,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:44:41,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 01:44:41,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:44:41,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 01:44:41,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:44:41,890 INFO L87 Difference]: Start difference. First operand 178 states and 273 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-24 01:44:49,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:44:49,810 INFO L93 Difference]: Finished difference Result 585 states and 858 transitions. [2024-11-24 01:44:49,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-24 01:44:49,812 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 223 [2024-11-24 01:44:49,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:44:49,820 INFO L225 Difference]: With dead ends: 585 [2024-11-24 01:44:49,823 INFO L226 Difference]: Without dead ends: 410 [2024-11-24 01:44:49,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=152, Invalid=354, Unknown=0, NotChecked=0, Total=506 [2024-11-24 01:44:49,830 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 422 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:44:49,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 808 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 01:44:49,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-11-24 01:44:49,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 341. [2024-11-24 01:44:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 249 states have (on average 1.3333333333333333) internal successors, (332), 254 states have internal predecessors, (332), 84 states have call successors, (84), 7 states have call predecessors, (84), 7 states have return successors, (84), 79 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-24 01:44:49,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 500 transitions. [2024-11-24 01:44:49,964 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 500 transitions. Word has length 223 [2024-11-24 01:44:49,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:44:49,967 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 500 transitions. [2024-11-24 01:44:49,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-24 01:44:49,968 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 500 transitions. [2024-11-24 01:44:49,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-24 01:44:49,978 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:44:49,978 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:44:49,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:44:49,979 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:44:49,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:44:49,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2105647515, now seen corresponding path program 1 times [2024-11-24 01:44:49,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:44:49,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760474922] [2024-11-24 01:44:49,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:44:49,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:44:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:46:55,309 WARN L286 SmtUtils]: Spent 11.59s on a formula simplification. DAG size of input: 289 DAG size of output: 225 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:48:53,453 WARN L286 SmtUtils]: Spent 11.95s on a formula simplification. DAG size of input: 293 DAG size of output: 227 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:48:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-24 01:48:53,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:48:53,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760474922] [2024-11-24 01:48:53,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760474922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:48:53,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:48:53,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-24 01:48:53,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718330312] [2024-11-24 01:48:53,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:48:53,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 01:48:53,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:48:53,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 01:48:53,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:48:53,570 INFO L87 Difference]: Start difference. First operand 341 states and 500 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-24 01:49:02,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:49:02,322 INFO L93 Difference]: Finished difference Result 887 states and 1269 transitions. [2024-11-24 01:49:02,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-24 01:49:02,323 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 223 [2024-11-24 01:49:02,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:49:02,330 INFO L225 Difference]: With dead ends: 887 [2024-11-24 01:49:02,330 INFO L226 Difference]: Without dead ends: 557 [2024-11-24 01:49:02,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 31.5s TimeCoverageRelationStatistics Valid=152, Invalid=354, Unknown=0, NotChecked=0, Total=506 [2024-11-24 01:49:02,333 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 360 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:49:02,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 934 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-24 01:49:02,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-24 01:49:02,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 290. [2024-11-24 01:49:02,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 204 states have (on average 1.303921568627451) internal successors, (266), 207 states have internal predecessors, (266), 78 states have call successors, (78), 7 states have call predecessors, (78), 7 states have return successors, (78), 75 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-24 01:49:02,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 422 transitions. [2024-11-24 01:49:02,436 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 422 transitions. Word has length 223 [2024-11-24 01:49:02,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:49:02,440 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 422 transitions. [2024-11-24 01:49:02,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-24 01:49:02,442 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 422 transitions. [2024-11-24 01:49:02,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-24 01:49:02,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:49:02,447 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:49:02,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:49:02,448 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:49:02,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:49:02,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1663745125, now seen corresponding path program 1 times [2024-11-24 01:49:02,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:49:02,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592287070] [2024-11-24 01:49:02,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:49:02,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:49:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:51:52,913 WARN L286 SmtUtils]: Spent 28.20s on a formula simplification. DAG size of input: 346 DAG size of output: 290 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:54:57,849 WARN L286 SmtUtils]: Spent 39.69s on a formula simplification. DAG size of input: 348 DAG size of output: 292 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:54:57,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-11-24 01:54:57,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:54:57,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592287070] [2024-11-24 01:54:57,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592287070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:54:57,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:54:57,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-24 01:54:57,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5210213] [2024-11-24 01:54:57,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:54:57,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 01:54:57,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:54:57,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 01:54:57,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:54:57,937 INFO L87 Difference]: Start difference. First operand 290 states and 422 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-24 01:55:15,467 WARN L286 SmtUtils]: Spent 13.93s on a formula simplification. DAG size of input: 305 DAG size of output: 286 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:55:33,692 WARN L286 SmtUtils]: Spent 17.47s on a formula simplification. DAG size of input: 307 DAG size of output: 288 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:55:54,648 WARN L286 SmtUtils]: Spent 18.22s on a formula simplification. DAG size of input: 310 DAG size of output: 291 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:56:10,389 WARN L286 SmtUtils]: Spent 15.43s on a formula simplification. DAG size of input: 310 DAG size of output: 291 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:56:11,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:56:11,442 INFO L93 Difference]: Finished difference Result 465 states and 653 transitions. [2024-11-24 01:56:11,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 01:56:11,443 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 223 [2024-11-24 01:56:11,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:56:11,455 INFO L225 Difference]: With dead ends: 465 [2024-11-24 01:56:11,455 INFO L226 Difference]: Without dead ends: 463 [2024-11-24 01:56:11,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 137.1s TimeCoverageRelationStatistics Valid=215, Invalid=541, Unknown=0, NotChecked=0, Total=756 [2024-11-24 01:56:11,457 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 350 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:56:11,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1435 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-24 01:56:11,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-24 01:56:11,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 273. [2024-11-24 01:56:11,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 187 states have (on average 1.2941176470588236) internal successors, (242), 190 states have internal predecessors, (242), 78 states have call successors, (78), 7 states have call predecessors, (78), 7 states have return successors, (78), 75 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-24 01:56:11,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 398 transitions. [2024-11-24 01:56:11,579 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 398 transitions. Word has length 223 [2024-11-24 01:56:11,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:56:11,586 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 398 transitions. [2024-11-24 01:56:11,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) [2024-11-24 01:56:11,586 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 398 transitions. [2024-11-24 01:56:11,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-24 01:56:11,596 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:56:11,596 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:56:11,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:56:11,597 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:56:11,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:56:11,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1894227197, now seen corresponding path program 1 times [2024-11-24 01:56:11,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:56:11,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712220578] [2024-11-24 01:56:11,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:56:11,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:56:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat