./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-64.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_86973cc1-c311-4c27-bcb2-199491ab88ea/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86973cc1-c311-4c27-bcb2-199491ab88ea/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_86973cc1-c311-4c27-bcb2-199491ab88ea/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86973cc1-c311-4c27-bcb2-199491ab88ea/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86973cc1-c311-4c27-bcb2-199491ab88ea/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_86973cc1-c311-4c27-bcb2-199491ab88ea/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 fcfd2020f2de2f3b0b0c5e1fa65c275be1e18677644d220992f0b39e0978bf8a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:17:10,946 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:17:11,060 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86973cc1-c311-4c27-bcb2-199491ab88ea/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:17:11,067 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:17:11,067 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:17:11,116 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:17:11,116 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:17:11,117 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:17:11,117 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:17:11,117 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:17:11,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:17:11,118 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:17:11,119 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:17:11,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:17:11,121 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:17:11,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:17:11,121 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:17:11,121 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:17:11,122 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:17:11,122 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:17:11,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:17:11,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:17:11,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:17:11,123 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:17:11,123 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:17:11,123 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:17:11,123 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:17:11,123 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:17:11,123 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:17:11,123 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:17:11,124 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:17:11,124 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:17:11,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:17:11,124 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:17:11,124 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:17:11,124 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:17:11,125 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:17:11,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:17:11,125 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:17:11,125 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:17:11,125 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:17:11,125 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:17:11,125 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:17:11,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:17:11,126 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:17:11,126 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:17:11,126 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:17:11,126 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:17:11,126 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_86973cc1-c311-4c27-bcb2-199491ab88ea/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 -> fcfd2020f2de2f3b0b0c5e1fa65c275be1e18677644d220992f0b39e0978bf8a [2024-11-24 00:17:11,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:17:11,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:17:11,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:17:11,667 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:17:11,667 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:17:11,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86973cc1-c311-4c27-bcb2-199491ab88ea/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-64.i [2024-11-24 00:17:15,346 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86973cc1-c311-4c27-bcb2-199491ab88ea/bin/uautomizer-verify-LYvppIcaGC/data/e2f1245be/32fca18ad8db46f7b72a3d551989fd8d/FLAG9c3510d06 [2024-11-24 00:17:15,884 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:17:15,885 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86973cc1-c311-4c27-bcb2-199491ab88ea/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-64.i [2024-11-24 00:17:15,908 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86973cc1-c311-4c27-bcb2-199491ab88ea/bin/uautomizer-verify-LYvppIcaGC/data/e2f1245be/32fca18ad8db46f7b72a3d551989fd8d/FLAG9c3510d06 [2024-11-24 00:17:15,939 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86973cc1-c311-4c27-bcb2-199491ab88ea/bin/uautomizer-verify-LYvppIcaGC/data/e2f1245be/32fca18ad8db46f7b72a3d551989fd8d [2024-11-24 00:17:15,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:17:15,946 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:17:15,948 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:17:15,948 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:17:15,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:17:15,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:17:15" (1/1) ... [2024-11-24 00:17:15,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e6d977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:15, skipping insertion in model container [2024-11-24 00:17:15,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:17:15" (1/1) ... [2024-11-24 00:17:15,998 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:17:16,219 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_86973cc1-c311-4c27-bcb2-199491ab88ea/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-64.i[919,932] [2024-11-24 00:17:16,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:17:16,358 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:17:16,375 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_86973cc1-c311-4c27-bcb2-199491ab88ea/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-64.i[919,932] [2024-11-24 00:17:16,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:17:16,510 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:17:16,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16 WrapperNode [2024-11-24 00:17:16,512 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:17:16,513 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:17:16,513 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:17:16,514 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:17:16,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,541 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,601 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 245 [2024-11-24 00:17:16,602 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:17:16,606 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:17:16,606 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:17:16,606 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:17:16,624 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,629 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,664 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 00:17:16,667 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,668 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,681 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,683 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,688 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,692 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,695 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:17:16,696 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:17:16,697 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:17:16,697 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:17:16,698 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (1/1) ... [2024-11-24 00:17:16,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:17:16,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86973cc1-c311-4c27-bcb2-199491ab88ea/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:16,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86973cc1-c311-4c27-bcb2-199491ab88ea/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:17:16,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86973cc1-c311-4c27-bcb2-199491ab88ea/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:17:16,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:17:16,786 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:17:16,786 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:17:16,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:17:16,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:17:16,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:17:16,914 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:17:16,917 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:17:17,684 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-24 00:17:17,684 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:17:17,709 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:17:17,709 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:17:17,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:17:17 BoogieIcfgContainer [2024-11-24 00:17:17,710 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:17:17,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:17:17,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:17:17,725 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:17:17,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:17:15" (1/3) ... [2024-11-24 00:17:17,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68967c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:17:17, skipping insertion in model container [2024-11-24 00:17:17,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:17:16" (2/3) ... [2024-11-24 00:17:17,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68967c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:17:17, skipping insertion in model container [2024-11-24 00:17:17,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:17:17" (3/3) ... [2024-11-24 00:17:17,729 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-64.i [2024-11-24 00:17:17,749 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:17:17,751 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-64.i that has 2 procedures, 105 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:17:17,825 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:17:17,841 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;@60efcd15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:17:17,842 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:17:17,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 64 states have (on average 1.390625) internal successors, (89), 65 states have internal predecessors, (89), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-24 00:17:17,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-24 00:17:17,871 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:17,872 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:17,872 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:17,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:17,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1513507201, now seen corresponding path program 1 times [2024-11-24 00:17:17,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:17,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933937586] [2024-11-24 00:17:17,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:17,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2024-11-24 00:17:18,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:18,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933937586] [2024-11-24 00:17:18,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933937586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:17:18,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537198771] [2024-11-24 00:17:18,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:18,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:17:18,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86973cc1-c311-4c27-bcb2-199491ab88ea/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:17:18,560 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86973cc1-c311-4c27-bcb2-199491ab88ea/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:17:18,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86973cc1-c311-4c27-bcb2-199491ab88ea/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:17:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:18,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:17:18,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:17:19,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2024-11-24 00:17:19,075 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:17:19,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537198771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:19,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:17:19,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 00:17:19,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077618570] [2024-11-24 00:17:19,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:19,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:17:19,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:19,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:17:19,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:17:19,120 INFO L87 Difference]: Start difference. First operand has 105 states, 64 states have (on average 1.390625) internal successors, (89), 65 states have internal predecessors, (89), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-24 00:17:19,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:19,194 INFO L93 Difference]: Finished difference Result 203 states and 362 transitions. [2024-11-24 00:17:19,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:17:19,199 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) Word has length 238 [2024-11-24 00:17:19,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:19,211 INFO L225 Difference]: With dead ends: 203 [2024-11-24 00:17:19,211 INFO L226 Difference]: Without dead ends: 101 [2024-11-24 00:17:19,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:17:19,220 INFO L435 NwaCegarLoop]: 158 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, 158 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:19,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:17:19,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-24 00:17:19,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-24 00:17:19,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 61 states have (on average 1.3442622950819672) internal successors, (82), 61 states have internal predecessors, (82), 38 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-24 00:17:19,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 158 transitions. [2024-11-24 00:17:19,296 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 158 transitions. Word has length 238 [2024-11-24 00:17:19,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:19,298 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 158 transitions. [2024-11-24 00:17:19,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-24 00:17:19,299 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 158 transitions. [2024-11-24 00:17:19,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-24 00:17:19,308 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:19,308 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:19,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86973cc1-c311-4c27-bcb2-199491ab88ea/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 00:17:19,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86973cc1-c311-4c27-bcb2-199491ab88ea/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 00:17:19,513 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:19,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:19,514 INFO L85 PathProgramCache]: Analyzing trace with hash -632876933, now seen corresponding path program 1 times [2024-11-24 00:17:19,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:19,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305897782] [2024-11-24 00:17:19,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:19,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-24 00:17:20,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:20,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305897782] [2024-11-24 00:17:20,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305897782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:20,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:20,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:17:20,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520219372] [2024-11-24 00:17:20,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:20,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:17:20,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:20,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:17:20,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:17:20,611 INFO L87 Difference]: Start difference. First operand 101 states and 158 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-24 00:17:21,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:21,322 INFO L93 Difference]: Finished difference Result 380 states and 595 transitions. [2024-11-24 00:17:21,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:17:21,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 238 [2024-11-24 00:17:21,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:21,332 INFO L225 Difference]: With dead ends: 380 [2024-11-24 00:17:21,336 INFO L226 Difference]: Without dead ends: 282 [2024-11-24 00:17:21,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:17:21,342 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 279 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:21,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 700 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:17:21,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-24 00:17:21,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 181. [2024-11-24 00:17:21,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 102 states have (on average 1.2745098039215685) internal successors, (130), 102 states have internal predecessors, (130), 76 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-24 00:17:21,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 282 transitions. [2024-11-24 00:17:21,465 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 282 transitions. Word has length 238 [2024-11-24 00:17:21,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:21,468 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 282 transitions. [2024-11-24 00:17:21,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-24 00:17:21,468 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 282 transitions. [2024-11-24 00:17:21,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-24 00:17:21,474 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:21,474 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:21,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:17:21,475 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:21,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:21,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1442223559, now seen corresponding path program 1 times [2024-11-24 00:17:21,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:21,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062570938] [2024-11-24 00:17:21,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:21,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-24 00:17:27,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:27,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062570938] [2024-11-24 00:17:27,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062570938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:27,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:27,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:17:27,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055397406] [2024-11-24 00:17:27,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:27,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:17:27,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:27,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:17:27,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:17:27,898 INFO L87 Difference]: Start difference. First operand 181 states and 282 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-24 00:17:28,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:28,843 INFO L93 Difference]: Finished difference Result 527 states and 826 transitions. [2024-11-24 00:17:28,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:17:28,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 238 [2024-11-24 00:17:28,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:28,850 INFO L225 Difference]: With dead ends: 527 [2024-11-24 00:17:28,851 INFO L226 Difference]: Without dead ends: 349 [2024-11-24 00:17:28,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:17:28,853 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 204 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:28,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 701 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:17:28,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-11-24 00:17:28,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 185. [2024-11-24 00:17:28,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 106 states have (on average 1.2830188679245282) internal successors, (136), 106 states have internal predecessors, (136), 76 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-24 00:17:28,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 288 transitions. [2024-11-24 00:17:28,922 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 288 transitions. Word has length 238 [2024-11-24 00:17:28,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:28,923 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 288 transitions. [2024-11-24 00:17:28,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-24 00:17:28,924 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 288 transitions. [2024-11-24 00:17:28,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-24 00:17:28,931 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:28,932 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:28,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:17:28,933 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:28,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:28,934 INFO L85 PathProgramCache]: Analyzing trace with hash -115723909, now seen corresponding path program 1 times [2024-11-24 00:17:28,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:28,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923160112] [2024-11-24 00:17:28,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:28,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:32,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-24 00:17:32,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:32,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923160112] [2024-11-24 00:17:32,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923160112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:32,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:32,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:17:32,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487049023] [2024-11-24 00:17:32,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:32,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:17:32,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:32,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:17:32,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:17:32,679 INFO L87 Difference]: Start difference. First operand 185 states and 288 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-24 00:17:33,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:33,228 INFO L93 Difference]: Finished difference Result 456 states and 711 transitions. [2024-11-24 00:17:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:17:33,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 238 [2024-11-24 00:17:33,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:33,233 INFO L225 Difference]: With dead ends: 456 [2024-11-24 00:17:33,234 INFO L226 Difference]: Without dead ends: 274 [2024-11-24 00:17:33,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:17:33,236 INFO L435 NwaCegarLoop]: 283 mSDtfsCounter, 159 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:33,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 862 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:17:33,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-24 00:17:33,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 181. [2024-11-24 00:17:33,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 102 states have (on average 1.2647058823529411) internal successors, (129), 102 states have internal predecessors, (129), 76 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-24 00:17:33,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 281 transitions. [2024-11-24 00:17:33,277 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 281 transitions. Word has length 238 [2024-11-24 00:17:33,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:33,278 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 281 transitions. [2024-11-24 00:17:33,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-24 00:17:33,279 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 281 transitions. [2024-11-24 00:17:33,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-24 00:17:33,283 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:33,283 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:33,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:17:33,283 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:33,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:33,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1142170550, now seen corresponding path program 1 times [2024-11-24 00:17:33,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:33,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983300973] [2024-11-24 00:17:33,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:33,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:17:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-24 00:17:33,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:17:33,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983300973] [2024-11-24 00:17:33,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983300973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:17:33,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:17:33,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:17:33,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306981953] [2024-11-24 00:17:33,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:17:33,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:17:33,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:33,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:17:33,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:17:33,731 INFO L87 Difference]: Start difference. First operand 181 states and 281 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-24 00:17:33,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:33,816 INFO L93 Difference]: Finished difference Result 535 states and 833 transitions. [2024-11-24 00:17:33,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:17:33,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 240 [2024-11-24 00:17:33,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:33,826 INFO L225 Difference]: With dead ends: 535 [2024-11-24 00:17:33,827 INFO L226 Difference]: Without dead ends: 357 [2024-11-24 00:17:33,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:17:33,829 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 84 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:33,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 315 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:17:33,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-24 00:17:33,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 355. [2024-11-24 00:17:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 198 states have (on average 1.2424242424242424) internal successors, (246), 198 states have internal predecessors, (246), 152 states have call successors, (152), 4 states have call predecessors, (152), 4 states have return successors, (152), 152 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-24 00:17:33,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 550 transitions. [2024-11-24 00:17:33,913 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 550 transitions. Word has length 240 [2024-11-24 00:17:33,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:33,914 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 550 transitions. [2024-11-24 00:17:33,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-24 00:17:33,918 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 550 transitions. [2024-11-24 00:17:33,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-24 00:17:33,923 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:33,923 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:33,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:17:33,924 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:33,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:33,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1107339827, now seen corresponding path program 1 times [2024-11-24 00:17:33,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:33,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285876024] [2024-11-24 00:17:33,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:17:33,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:25:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-11-24 00:25:45,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:25:45,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285876024] [2024-11-24 00:25:45,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285876024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:25:45,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:25:45,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-24 00:25:45,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151112534] [2024-11-24 00:25:45,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:25:45,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 00:25:45,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:25:45,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 00:25:45,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:25:45,836 INFO L87 Difference]: Start difference. First operand 355 states and 550 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-24 00:25:56,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:25:56,858 INFO L93 Difference]: Finished difference Result 712 states and 1008 transitions. [2024-11-24 00:25:56,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-24 00:25:56,860 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) Word has length 241 [2024-11-24 00:25:56,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:25:56,865 INFO L225 Difference]: With dead ends: 712 [2024-11-24 00:25:56,865 INFO L226 Difference]: Without dead ends: 710 [2024-11-24 00:25:56,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2024-11-24 00:25:56,867 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 307 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:25:56,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 870 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-24 00:25:56,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2024-11-24 00:25:57,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 499. [2024-11-24 00:25:57,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 306 states have (on average 1.2712418300653594) internal successors, (389), 310 states have internal predecessors, (389), 184 states have call successors, (184), 8 states have call predecessors, (184), 8 states have return successors, (184), 180 states have call predecessors, (184), 184 states have call successors, (184) [2024-11-24 00:25:57,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 757 transitions. [2024-11-24 00:25:57,009 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 757 transitions. Word has length 241 [2024-11-24 00:25:57,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:25:57,010 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 757 transitions. [2024-11-24 00:25:57,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (38), 1 states have call predecessors, (38), 1 states have return successors, (38), 1 states have call predecessors, (38), 1 states have call successors, (38) [2024-11-24 00:25:57,011 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 757 transitions. [2024-11-24 00:25:57,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-24 00:25:57,014 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:25:57,015 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:25:57,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:25:57,015 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:25:57,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:25:57,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1500366837, now seen corresponding path program 1 times [2024-11-24 00:25:57,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:25:57,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388910025] [2024-11-24 00:25:57,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:25:57,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:25:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat