./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-33.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_476027b0-e675-41db-9830-c272bacbaa99/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476027b0-e675-41db-9830-c272bacbaa99/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_476027b0-e675-41db-9830-c272bacbaa99/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476027b0-e675-41db-9830-c272bacbaa99/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-33.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476027b0-e675-41db-9830-c272bacbaa99/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_476027b0-e675-41db-9830-c272bacbaa99/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 2455b112e52a42d84b808fd6137571b9cca3ff5d97324027a8a2378e325a2c67 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:20:58,805 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:20:58,888 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476027b0-e675-41db-9830-c272bacbaa99/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:20:58,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:20:58,894 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:20:58,919 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:20:58,920 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:20:58,920 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:20:58,920 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:20:58,921 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:20:58,921 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:20:58,921 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:20:58,921 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:20:58,921 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:20:58,922 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:20:58,922 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:20:58,922 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:20:58,922 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:20:58,922 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:20:58,922 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:20:58,923 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:20:58,923 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:20:58,923 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:20:58,923 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:20:58,923 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:20:58,923 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:20:58,923 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:20:58,924 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:20:58,924 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:20:58,924 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:20:58,924 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:20:58,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:20:58,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:20:58,924 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:20:58,925 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:20:58,925 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:20:58,925 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:20:58,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:20:58,925 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:20:58,925 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:20:58,925 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:20:58,925 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:20:58,925 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:20:58,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:20:58,926 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:20:58,926 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:20:58,926 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:20:58,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:20:58,926 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_476027b0-e675-41db-9830-c272bacbaa99/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 -> 2455b112e52a42d84b808fd6137571b9cca3ff5d97324027a8a2378e325a2c67 [2024-11-24 00:20:59,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:20:59,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:20:59,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:20:59,269 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:20:59,269 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:20:59,270 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476027b0-e675-41db-9830-c272bacbaa99/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-33.i [2024-11-24 00:21:02,231 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476027b0-e675-41db-9830-c272bacbaa99/bin/uautomizer-verify-LYvppIcaGC/data/73d3bbb17/0d15d9d54c6843a0bd5a664e8969b51b/FLAG61b731a0c [2024-11-24 00:21:02,555 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:21:02,556 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476027b0-e675-41db-9830-c272bacbaa99/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-33.i [2024-11-24 00:21:02,566 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476027b0-e675-41db-9830-c272bacbaa99/bin/uautomizer-verify-LYvppIcaGC/data/73d3bbb17/0d15d9d54c6843a0bd5a664e8969b51b/FLAG61b731a0c [2024-11-24 00:21:02,579 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476027b0-e675-41db-9830-c272bacbaa99/bin/uautomizer-verify-LYvppIcaGC/data/73d3bbb17/0d15d9d54c6843a0bd5a664e8969b51b [2024-11-24 00:21:02,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:21:02,582 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:21:02,583 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:21:02,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:21:02,588 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:21:02,589 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:21:02" (1/1) ... [2024-11-24 00:21:02,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1628c334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:02, skipping insertion in model container [2024-11-24 00:21:02,590 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:21:02" (1/1) ... [2024-11-24 00:21:02,609 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:21:02,793 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_476027b0-e675-41db-9830-c272bacbaa99/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-33.i[919,932] [2024-11-24 00:21:02,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:21:02,881 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:21:02,890 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_476027b0-e675-41db-9830-c272bacbaa99/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-33.i[919,932] [2024-11-24 00:21:02,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:21:02,964 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:21:02,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:02 WrapperNode [2024-11-24 00:21:02,965 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:21:02,966 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:21:02,966 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:21:02,966 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:21:02,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:02" (1/1) ... [2024-11-24 00:21:02,987 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:02" (1/1) ... [2024-11-24 00:21:03,040 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 200 [2024-11-24 00:21:03,040 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:21:03,041 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:21:03,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:21:03,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:21:03,050 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:02" (1/1) ... [2024-11-24 00:21:03,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:02" (1/1) ... [2024-11-24 00:21:03,054 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:02" (1/1) ... [2024-11-24 00:21:03,069 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 00:21:03,070 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:02" (1/1) ... [2024-11-24 00:21:03,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:02" (1/1) ... [2024-11-24 00:21:03,078 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:02" (1/1) ... [2024-11-24 00:21:03,079 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:02" (1/1) ... [2024-11-24 00:21:03,082 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:02" (1/1) ... [2024-11-24 00:21:03,085 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:02" (1/1) ... [2024-11-24 00:21:03,086 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:02" (1/1) ... [2024-11-24 00:21:03,090 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:21:03,091 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:21:03,091 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:21:03,091 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:21:03,092 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:02" (1/1) ... [2024-11-24 00:21:03,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:21:03,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476027b0-e675-41db-9830-c272bacbaa99/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:21:03,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476027b0-e675-41db-9830-c272bacbaa99/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:21:03,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476027b0-e675-41db-9830-c272bacbaa99/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:21:03,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:21:03,157 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:21:03,157 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:21:03,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:21:03,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:21:03,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:21:03,263 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:21:03,265 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:21:03,803 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-24 00:21:03,803 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:21:03,813 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:21:03,813 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:21:03,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:21:03 BoogieIcfgContainer [2024-11-24 00:21:03,814 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:21:03,816 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:21:03,816 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:21:03,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:21:03,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:21:02" (1/3) ... [2024-11-24 00:21:03,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f288b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:21:03, skipping insertion in model container [2024-11-24 00:21:03,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:21:02" (2/3) ... [2024-11-24 00:21:03,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f288b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:21:03, skipping insertion in model container [2024-11-24 00:21:03,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:21:03" (3/3) ... [2024-11-24 00:21:03,824 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-33.i [2024-11-24 00:21:03,839 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:21:03,840 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-33.i that has 2 procedures, 88 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:21:03,925 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:21:03,942 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;@73063248, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:21:03,942 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:21:03,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 60 states have internal predecessors, (86), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-24 00:21:03,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-24 00:21:03,962 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:03,962 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:21:03,964 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:03,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:03,970 INFO L85 PathProgramCache]: Analyzing trace with hash 643827931, now seen corresponding path program 1 times [2024-11-24 00:21:03,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:03,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444880488] [2024-11-24 00:21:03,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:03,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:04,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-24 00:21:04,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:04,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444880488] [2024-11-24 00:21:04,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444880488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:21:04,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038405916] [2024-11-24 00:21:04,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:04,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:04,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476027b0-e675-41db-9830-c272bacbaa99/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:21:04,401 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476027b0-e675-41db-9830-c272bacbaa99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:21:04,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476027b0-e675-41db-9830-c272bacbaa99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:21:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:04,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:21:04,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:21:04,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-24 00:21:04,645 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:21:04,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038405916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:04,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:21:04,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 00:21:04,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266670443] [2024-11-24 00:21:04,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:04,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:21:04,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:04,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:21:04,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:21:04,677 INFO L87 Difference]: Start difference. First operand has 88 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 60 states have internal predecessors, (86), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-24 00:21:04,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:04,706 INFO L93 Difference]: Finished difference Result 167 states and 292 transitions. [2024-11-24 00:21:04,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:21:04,708 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 169 [2024-11-24 00:21:04,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:04,714 INFO L225 Difference]: With dead ends: 167 [2024-11-24 00:21:04,715 INFO L226 Difference]: Without dead ends: 82 [2024-11-24 00:21:04,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 170 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 00:21:04,720 INFO L435 NwaCegarLoop]: 123 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, 123 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 00:21:04,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:21:04,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-24 00:21:04,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-24 00:21:04,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 54 states have internal predecessors, (71), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-24 00:21:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 123 transitions. [2024-11-24 00:21:04,764 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 123 transitions. Word has length 169 [2024-11-24 00:21:04,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:04,765 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 123 transitions. [2024-11-24 00:21:04,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-24 00:21:04,765 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 123 transitions. [2024-11-24 00:21:04,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-24 00:21:04,769 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:04,769 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:21:04,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476027b0-e675-41db-9830-c272bacbaa99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:21:04,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476027b0-e675-41db-9830-c272bacbaa99/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 00:21:04,970 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:04,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:04,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1488024805, now seen corresponding path program 1 times [2024-11-24 00:21:04,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:04,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123439793] [2024-11-24 00:21:04,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:04,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 00:21:06,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:06,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123439793] [2024-11-24 00:21:06,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123439793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:06,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:06,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:21:06,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169032375] [2024-11-24 00:21:06,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:06,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:21:06,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:06,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:21:06,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:21:06,328 INFO L87 Difference]: Start difference. First operand 82 states and 123 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 00:21:06,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:06,817 INFO L93 Difference]: Finished difference Result 245 states and 371 transitions. [2024-11-24 00:21:06,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:21:06,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 169 [2024-11-24 00:21:06,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:06,821 INFO L225 Difference]: With dead ends: 245 [2024-11-24 00:21:06,821 INFO L226 Difference]: Without dead ends: 166 [2024-11-24 00:21:06,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:21:06,823 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 85 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:06,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 304 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:21:06,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-24 00:21:06,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2024-11-24 00:21:06,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 97 states have (on average 1.309278350515464) internal successors, (127), 97 states have internal predecessors, (127), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 00:21:06,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 231 transitions. [2024-11-24 00:21:06,871 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 231 transitions. Word has length 169 [2024-11-24 00:21:06,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:06,872 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 231 transitions. [2024-11-24 00:21:06,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 00:21:06,872 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 231 transitions. [2024-11-24 00:21:06,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-24 00:21:06,875 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:06,875 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:21:06,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:21:06,876 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:06,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:06,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1803329384, now seen corresponding path program 1 times [2024-11-24 00:21:06,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:06,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753593305] [2024-11-24 00:21:06,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:06,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:07,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-24 00:21:07,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:07,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753593305] [2024-11-24 00:21:07,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753593305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:07,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:07,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:21:07,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635427112] [2024-11-24 00:21:07,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:07,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:21:07,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:07,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:21:07,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:21:07,348 INFO L87 Difference]: Start difference. First operand 152 states and 231 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 00:21:07,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:07,690 INFO L93 Difference]: Finished difference Result 263 states and 396 transitions. [2024-11-24 00:21:07,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:21:07,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 170 [2024-11-24 00:21:07,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:07,695 INFO L225 Difference]: With dead ends: 263 [2024-11-24 00:21:07,698 INFO L226 Difference]: Without dead ends: 162 [2024-11-24 00:21:07,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:21:07,699 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 82 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:07,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 309 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:21:07,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-24 00:21:07,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 153. [2024-11-24 00:21:07,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 98 states have (on average 1.2959183673469388) internal successors, (127), 98 states have internal predecessors, (127), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 00:21:07,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 231 transitions. [2024-11-24 00:21:07,764 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 231 transitions. Word has length 170 [2024-11-24 00:21:07,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:07,765 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 231 transitions. [2024-11-24 00:21:07,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-24 00:21:07,765 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 231 transitions. [2024-11-24 00:21:07,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-24 00:21:07,771 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:07,772 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:21:07,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:21:07,772 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:07,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:07,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1390146878, now seen corresponding path program 1 times [2024-11-24 00:21:07,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:07,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988966947] [2024-11-24 00:21:07,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:07,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat