./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-31.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-31.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1 --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 e35b58fc5b5d3bd96f979b50ab552950d520b0e41c0cf9ea2d0c476079709cda --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 22:58:51,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 22:58:51,523 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-01 22:58:51,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 22:58:51,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 22:58:51,549 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 22:58:51,550 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 22:58:51,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 22:58:51,550 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 22:58:51,550 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 22:58:51,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 22:58:51,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 22:58:51,551 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 22:58:51,551 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 22:58:51,551 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 22:58:51,551 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 22:58:51,552 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 22:58:51,552 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 22:58:51,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 22:58:51,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 22:58:51,552 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 22:58:51,552 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 22:58:51,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 22:58:51,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 22:58:51,552 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 22:58:51,552 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 22:58:51,553 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 22:58:51,553 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 22:58:51,553 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 22:58:51,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 22:58:51,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 22:58:51,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 22:58:51,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 22:58:51,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 22:58:51,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 22:58:51,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 22:58:51,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 22:58:51,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 22:58:51,554 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 22:58:51,554 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 22:58:51,554 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 22:58:51,554 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 22:58:51,554 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 22:58:51,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 22:58:51,554 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 22:58:51,554 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 22:58:51,555 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 22:58:51,555 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 22:58:51,555 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1 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 -> e35b58fc5b5d3bd96f979b50ab552950d520b0e41c0cf9ea2d0c476079709cda [2024-12-01 22:58:51,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 22:58:51,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 22:58:51,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 22:58:51,776 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 22:58:51,776 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 22:58:51,777 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-31.i [2024-12-01 22:58:54,447 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1/data/569b6416e/3c51a872ce474fa99ae6041d9d7e50c5/FLAGd9154a4ca [2024-12-01 22:58:54,670 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 22:58:54,670 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-31.i [2024-12-01 22:58:54,680 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1/data/569b6416e/3c51a872ce474fa99ae6041d9d7e50c5/FLAGd9154a4ca [2024-12-01 22:58:54,695 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1/data/569b6416e/3c51a872ce474fa99ae6041d9d7e50c5 [2024-12-01 22:58:54,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 22:58:54,699 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 22:58:54,700 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 22:58:54,700 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 22:58:54,703 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 22:58:54,704 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:58:54" (1/1) ... [2024-12-01 22:58:54,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612cfd26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:54, skipping insertion in model container [2024-12-01 22:58:54,705 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:58:54" (1/1) ... [2024-12-01 22:58:54,725 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 22:58:54,842 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_184c0e1c-ab87-4727-8b01-cfa89a6c2116/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-31.i[919,932] [2024-12-01 22:58:54,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 22:58:54,933 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 22:58:54,942 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_184c0e1c-ab87-4727-8b01-cfa89a6c2116/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-31.i[919,932] [2024-12-01 22:58:54,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 22:58:55,002 INFO L204 MainTranslator]: Completed translation [2024-12-01 22:58:55,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:55 WrapperNode [2024-12-01 22:58:55,003 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 22:58:55,003 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 22:58:55,003 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 22:58:55,003 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 22:58:55,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:55" (1/1) ... [2024-12-01 22:58:55,019 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:55" (1/1) ... [2024-12-01 22:58:55,061 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 265 [2024-12-01 22:58:55,062 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 22:58:55,062 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 22:58:55,062 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 22:58:55,062 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 22:58:55,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:55" (1/1) ... [2024-12-01 22:58:55,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:55" (1/1) ... [2024-12-01 22:58:55,074 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:55" (1/1) ... [2024-12-01 22:58:55,093 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]. [2024-12-01 22:58:55,094 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:55" (1/1) ... [2024-12-01 22:58:55,094 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:55" (1/1) ... [2024-12-01 22:58:55,105 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:55" (1/1) ... [2024-12-01 22:58:55,107 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:55" (1/1) ... [2024-12-01 22:58:55,110 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:55" (1/1) ... [2024-12-01 22:58:55,113 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:55" (1/1) ... [2024-12-01 22:58:55,115 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:55" (1/1) ... [2024-12-01 22:58:55,120 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 22:58:55,121 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 22:58:55,121 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 22:58:55,121 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 22:58:55,122 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:55" (1/1) ... [2024-12-01 22:58:55,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 22:58:55,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:58:55,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 22:58:55,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 22:58:55,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 22:58:55,167 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-01 22:58:55,167 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-01 22:58:55,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 22:58:55,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 22:58:55,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 22:58:55,238 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 22:58:55,240 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 22:58:55,641 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-12-01 22:58:55,642 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 22:58:55,653 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 22:58:55,653 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-01 22:58:55,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:58:55 BoogieIcfgContainer [2024-12-01 22:58:55,654 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 22:58:55,656 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 22:58:55,656 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 22:58:55,661 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 22:58:55,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 10:58:54" (1/3) ... [2024-12-01 22:58:55,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151456d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:58:55, skipping insertion in model container [2024-12-01 22:58:55,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:58:55" (2/3) ... [2024-12-01 22:58:55,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151456d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:58:55, skipping insertion in model container [2024-12-01 22:58:55,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:58:55" (3/3) ... [2024-12-01 22:58:55,663 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-31.i [2024-12-01 22:58:55,686 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 22:58:55,689 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-31.i that has 2 procedures, 121 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-01 22:58:55,744 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 22:58:55,756 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;@13d4114b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 22:58:55,756 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-01 22:58:55,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 70 states have (on average 1.3857142857142857) internal successors, (97), 71 states have internal predecessors, (97), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-12-01 22:58:55,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-12-01 22:58:55,774 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:55,775 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:58:55,775 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:55,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:55,781 INFO L85 PathProgramCache]: Analyzing trace with hash -166575295, now seen corresponding path program 1 times [2024-12-01 22:58:55,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:55,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120210120] [2024-12-01 22:58:55,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:55,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:56,120 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2024-12-01 22:58:56,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:56,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120210120] [2024-12-01 22:58:56,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120210120] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 22:58:56,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390686477] [2024-12-01 22:58:56,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:56,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:58:56,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 22:58:56,125 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 22:58:56,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 22:58:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:56,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-01 22:58:56,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 22:58:56,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2024-12-01 22:58:56,385 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 22:58:56,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390686477] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:56,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 22:58:56,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-01 22:58:56,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616795476] [2024-12-01 22:58:56,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:56,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-01 22:58:56,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:56,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-01 22:58:56,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 22:58:56,419 INFO L87 Difference]: Start difference. First operand has 121 states, 70 states have (on average 1.3857142857142857) internal successors, (97), 71 states have internal predecessors, (97), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-01 22:58:56,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:56,459 INFO L93 Difference]: Finished difference Result 235 states and 428 transitions. [2024-12-01 22:58:56,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-01 22:58:56,461 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 291 [2024-12-01 22:58:56,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:56,468 INFO L225 Difference]: With dead ends: 235 [2024-12-01 22:58:56,469 INFO L226 Difference]: Without dead ends: 117 [2024-12-01 22:58:56,472 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 22:58:56,475 INFO L435 NwaCegarLoop]: 186 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, 186 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 [2024-12-01 22:58:56,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 22:58:56,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-12-01 22:58:56,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-12-01 22:58:56,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 67 states have (on average 1.3432835820895523) internal successors, (90), 67 states have internal predecessors, (90), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-12-01 22:58:56,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 186 transitions. [2024-12-01 22:58:56,535 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 186 transitions. Word has length 291 [2024-12-01 22:58:56,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:56,536 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 186 transitions. [2024-12-01 22:58:56,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2024-12-01 22:58:56,536 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 186 transitions. [2024-12-01 22:58:56,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-12-01 22:58:56,542 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:56,542 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:58:56,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-01 22:58:56,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184c0e1c-ab87-4727-8b01-cfa89a6c2116/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 22:58:56,743 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:56,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:56,744 INFO L85 PathProgramCache]: Analyzing trace with hash -312055487, now seen corresponding path program 1 times [2024-12-01 22:58:56,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:56,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506473722] [2024-12-01 22:58:56,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:56,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-01 22:58:57,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:57,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506473722] [2024-12-01 22:58:57,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506473722] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:57,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:58:57,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 22:58:57,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752174255] [2024-12-01 22:58:57,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:57,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 22:58:57,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:57,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 22:58:57,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 22:58:57,044 INFO L87 Difference]: Start difference. First operand 117 states and 186 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-01 22:58:57,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:57,120 INFO L93 Difference]: Finished difference Result 344 states and 550 transitions. [2024-12-01 22:58:57,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 22:58:57,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 291 [2024-12-01 22:58:57,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:57,124 INFO L225 Difference]: With dead ends: 344 [2024-12-01 22:58:57,124 INFO L226 Difference]: Without dead ends: 230 [2024-12-01 22:58:57,125 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 [2024-12-01 22:58:57,126 INFO L435 NwaCegarLoop]: 355 mSDtfsCounter, 174 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 22:58:57,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 530 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 22:58:57,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-12-01 22:58:57,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 121. [2024-12-01 22:58:57,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 71 states have internal predecessors, (95), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-12-01 22:58:57,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 191 transitions. [2024-12-01 22:58:57,150 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 191 transitions. Word has length 291 [2024-12-01 22:58:57,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:57,152 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 191 transitions. [2024-12-01 22:58:57,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-01 22:58:57,152 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 191 transitions. [2024-12-01 22:58:57,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-12-01 22:58:57,157 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:57,157 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:58:57,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-01 22:58:57,157 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:57,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:57,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1121402113, now seen corresponding path program 1 times [2024-12-01 22:58:57,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:57,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507222260] [2024-12-01 22:58:57,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:57,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:58:57,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-01 22:58:57,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:58:57,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507222260] [2024-12-01 22:58:57,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507222260] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:58:57,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:58:57,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 22:58:57,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683892419] [2024-12-01 22:58:57,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:58:57,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 22:58:57,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:58:57,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 22:58:57,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 22:58:57,815 INFO L87 Difference]: Start difference. First operand 121 states and 191 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-01 22:58:58,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:58:58,112 INFO L93 Difference]: Finished difference Result 353 states and 565 transitions. [2024-12-01 22:58:58,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 22:58:58,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 291 [2024-12-01 22:58:58,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:58:58,117 INFO L225 Difference]: With dead ends: 353 [2024-12-01 22:58:58,117 INFO L226 Difference]: Without dead ends: 235 [2024-12-01 22:58:58,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-01 22:58:58,119 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 95 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 22:58:58,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 431 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 22:58:58,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-12-01 22:58:58,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 211. [2024-12-01 22:58:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 112 states have (on average 1.2857142857142858) internal successors, (144), 112 states have internal predecessors, (144), 96 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-12-01 22:58:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 336 transitions. [2024-12-01 22:58:58,161 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 336 transitions. Word has length 291 [2024-12-01 22:58:58,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:58:58,161 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 336 transitions. [2024-12-01 22:58:58,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-01 22:58:58,162 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 336 transitions. [2024-12-01 22:58:58,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-12-01 22:58:58,164 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:58:58,164 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:58:58,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-01 22:58:58,164 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:58:58,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:58:58,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1893701505, now seen corresponding path program 1 times [2024-12-01 22:58:58,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:58:58,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608071999] [2024-12-01 22:58:58,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:58:58,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:58:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 22:59:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-12-01 22:59:05,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 22:59:05,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608071999] [2024-12-01 22:59:05,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608071999] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 22:59:05,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 22:59:05,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-01 22:59:05,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744267385] [2024-12-01 22:59:05,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 22:59:05,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-01 22:59:05,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 22:59:05,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-01 22:59:05,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-12-01 22:59:05,160 INFO L87 Difference]: Start difference. First operand 211 states and 336 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-01 22:59:06,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 22:59:06,519 INFO L93 Difference]: Finished difference Result 420 states and 635 transitions. [2024-12-01 22:59:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-01 22:59:06,519 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 291 [2024-12-01 22:59:06,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 22:59:06,522 INFO L225 Difference]: With dead ends: 420 [2024-12-01 22:59:06,522 INFO L226 Difference]: Without dead ends: 301 [2024-12-01 22:59:06,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-12-01 22:59:06,523 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 168 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-01 22:59:06,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 1065 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-01 22:59:06,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-12-01 22:59:06,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 249. [2024-12-01 22:59:06,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 146 states have (on average 1.3082191780821917) internal successors, (191), 147 states have internal predecessors, (191), 98 states have call successors, (98), 4 states have call predecessors, (98), 4 states have return successors, (98), 97 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-01 22:59:06,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 387 transitions. [2024-12-01 22:59:06,553 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 387 transitions. Word has length 291 [2024-12-01 22:59:06,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 22:59:06,554 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 387 transitions. [2024-12-01 22:59:06,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2024-12-01 22:59:06,554 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 387 transitions. [2024-12-01 22:59:06,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-12-01 22:59:06,556 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 22:59:06,556 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 22:59:06,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-01 22:59:06,556 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 22:59:06,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 22:59:06,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1954553286, now seen corresponding path program 1 times [2024-12-01 22:59:06,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 22:59:06,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896219758] [2024-12-01 22:59:06,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 22:59:06,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 22:59:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat