./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_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_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/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_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-33.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/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_77076e00-f528-421c-9180-fbe89e80253b/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 0fae542ffc508d581529777e32a74e7eca7b7550b33272b19a75a08e2a9e3ba4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:08:03,411 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:08:03,544 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:08:03,552 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:08:03,553 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:08:03,599 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:08:03,600 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:08:03,600 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:08:03,601 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:08:03,602 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:08:03,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:08:03,603 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:08:03,603 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:08:03,603 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:08:03,604 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:08:03,604 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:08:03,604 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:08:03,605 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:08:03,605 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:08:03,605 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:08:03,605 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:08:03,605 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:08:03,605 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:08:03,605 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:08:03,605 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:08:03,605 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:08:03,605 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:08:03,606 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:08:03,606 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:08:03,606 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:08:03,606 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:08:03,606 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:08:03,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:08:03,606 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:08:03,606 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:08:03,607 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:08:03,607 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:08:03,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:08:03,607 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:08:03,607 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:08:03,607 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:08:03,607 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:08:03,607 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:08:03,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:08:03,609 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:08:03,609 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:08:03,609 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:08:03,609 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:08:03,609 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_77076e00-f528-421c-9180-fbe89e80253b/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 -> 0fae542ffc508d581529777e32a74e7eca7b7550b33272b19a75a08e2a9e3ba4 [2024-11-24 00:08:04,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:08:04,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:08:04,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:08:04,066 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:08:04,067 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:08:04,068 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-33.i [2024-11-24 00:08:07,603 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/data/cc269fb29/ab85d83928a94f9d86c7a47f318bbd23/FLAGb5f9daf3d [2024-11-24 00:08:08,074 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:08:08,075 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-33.i [2024-11-24 00:08:08,090 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/data/cc269fb29/ab85d83928a94f9d86c7a47f318bbd23/FLAGb5f9daf3d [2024-11-24 00:08:08,109 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/data/cc269fb29/ab85d83928a94f9d86c7a47f318bbd23 [2024-11-24 00:08:08,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:08:08,114 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:08:08,116 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:08:08,116 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:08:08,122 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:08:08,124 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:08:08" (1/1) ... [2024-11-24 00:08:08,125 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4364a347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:08, skipping insertion in model container [2024-11-24 00:08:08,125 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:08:08" (1/1) ... [2024-11-24 00:08:08,162 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:08:08,351 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_77076e00-f528-421c-9180-fbe89e80253b/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-33.i[916,929] [2024-11-24 00:08:08,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:08:08,552 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:08:08,565 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_77076e00-f528-421c-9180-fbe89e80253b/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-33.i[916,929] [2024-11-24 00:08:08,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:08:08,677 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:08:08,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:08 WrapperNode [2024-11-24 00:08:08,678 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:08:08,679 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:08:08,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:08:08,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:08:08,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:08" (1/1) ... [2024-11-24 00:08:08,708 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:08" (1/1) ... [2024-11-24 00:08:08,793 INFO L138 Inliner]: procedures = 26, calls = 99, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 597 [2024-11-24 00:08:08,794 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:08:08,794 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:08:08,794 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:08:08,795 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:08:08,810 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:08" (1/1) ... [2024-11-24 00:08:08,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:08" (1/1) ... [2024-11-24 00:08:08,832 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:08" (1/1) ... [2024-11-24 00:08:08,862 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 00:08:08,862 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:08" (1/1) ... [2024-11-24 00:08:08,863 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:08" (1/1) ... [2024-11-24 00:08:08,886 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:08" (1/1) ... [2024-11-24 00:08:08,891 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:08" (1/1) ... [2024-11-24 00:08:08,898 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:08" (1/1) ... [2024-11-24 00:08:08,906 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:08" (1/1) ... [2024-11-24 00:08:08,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:08" (1/1) ... [2024-11-24 00:08:08,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:08:08,927 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:08:08,927 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:08:08,927 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:08:08,929 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:08" (1/1) ... [2024-11-24 00:08:08,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:08:08,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:08:08,976 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:08:08,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:08:09,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:08:09,013 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:08:09,013 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:08:09,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:08:09,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:08:09,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:08:09,214 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:08:09,217 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:08:10,730 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-24 00:08:10,730 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:08:10,750 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:08:10,750 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:08:10,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:08:10 BoogieIcfgContainer [2024-11-24 00:08:10,751 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:08:10,753 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:08:10,753 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:08:10,759 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:08:10,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:08:08" (1/3) ... [2024-11-24 00:08:10,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22279cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:08:10, skipping insertion in model container [2024-11-24 00:08:10,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:08" (2/3) ... [2024-11-24 00:08:10,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22279cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:08:10, skipping insertion in model container [2024-11-24 00:08:10,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:08:10" (3/3) ... [2024-11-24 00:08:10,762 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-33.i [2024-11-24 00:08:10,808 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:08:10,813 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-33.i that has 2 procedures, 257 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:08:10,908 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:08:10,926 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;@66c308f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:08:10,927 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:08:10,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 257 states, 168 states have (on average 1.5357142857142858) internal successors, (258), 169 states have internal predecessors, (258), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-24 00:08:10,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2024-11-24 00:08:10,979 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:10,981 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:10,981 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:10,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:10,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1349807650, now seen corresponding path program 1 times [2024-11-24 00:08:11,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:11,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090884447] [2024-11-24 00:08:11,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:11,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2024-11-24 00:08:12,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:12,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090884447] [2024-11-24 00:08:12,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090884447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:08:12,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797513536] [2024-11-24 00:08:12,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:12,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:12,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:08:12,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:08:12,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:08:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:12,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:08:12,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:08:12,952 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2024-11-24 00:08:12,952 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:08:12,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797513536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:08:12,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:08:12,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 00:08:12,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106583771] [2024-11-24 00:08:12,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:08:12,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:08:12,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:12,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:08:12,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:08:12,992 INFO L87 Difference]: Start difference. First operand has 257 states, 168 states have (on average 1.5357142857142858) internal successors, (258), 169 states have internal predecessors, (258), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 2 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) [2024-11-24 00:08:13,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:13,085 INFO L93 Difference]: Finished difference Result 507 states and 940 transitions. [2024-11-24 00:08:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:08:13,087 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) Word has length 533 [2024-11-24 00:08:13,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:13,100 INFO L225 Difference]: With dead ends: 507 [2024-11-24 00:08:13,100 INFO L226 Difference]: Without dead ends: 253 [2024-11-24 00:08:13,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 534 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 00:08:13,112 INFO L435 NwaCegarLoop]: 421 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, 421 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 00:08:13,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:08:13,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-24 00:08:13,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-11-24 00:08:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 165 states have (on average 1.509090909090909) internal successors, (249), 165 states have internal predecessors, (249), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-24 00:08:13,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 421 transitions. [2024-11-24 00:08:13,234 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 421 transitions. Word has length 533 [2024-11-24 00:08:13,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:13,235 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 421 transitions. [2024-11-24 00:08:13,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) [2024-11-24 00:08:13,236 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 421 transitions. [2024-11-24 00:08:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2024-11-24 00:08:13,273 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:13,274 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:13,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:08:13,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:13,476 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:13,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:13,477 INFO L85 PathProgramCache]: Analyzing trace with hash -350335398, now seen corresponding path program 1 times [2024-11-24 00:08:13,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:13,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266092691] [2024-11-24 00:08:13,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:13,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:16,526 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-24 00:08:16,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:16,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266092691] [2024-11-24 00:08:16,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266092691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:08:16,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:08:16,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:08:16,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713933608] [2024-11-24 00:08:16,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:08:16,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:08:16,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:16,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:08:16,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:08:16,535 INFO L87 Difference]: Start difference. First operand 253 states and 421 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-24 00:08:16,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:16,966 INFO L93 Difference]: Finished difference Result 753 states and 1257 transitions. [2024-11-24 00:08:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:08:16,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 533 [2024-11-24 00:08:16,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:16,979 INFO L225 Difference]: With dead ends: 753 [2024-11-24 00:08:16,979 INFO L226 Difference]: Without dead ends: 503 [2024-11-24 00:08:16,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:08:16,983 INFO L435 NwaCegarLoop]: 414 mSDtfsCounter, 415 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:08:16,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 819 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:08:16,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-11-24 00:08:17,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 501. [2024-11-24 00:08:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 326 states have (on average 1.5122699386503067) internal successors, (493), 326 states have internal predecessors, (493), 172 states have call successors, (172), 2 states have call predecessors, (172), 2 states have return successors, (172), 172 states have call predecessors, (172), 172 states have call successors, (172) [2024-11-24 00:08:17,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 837 transitions. [2024-11-24 00:08:17,145 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 837 transitions. Word has length 533 [2024-11-24 00:08:17,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:17,147 INFO L471 AbstractCegarLoop]: Abstraction has 501 states and 837 transitions. [2024-11-24 00:08:17,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-24 00:08:17,147 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 837 transitions. [2024-11-24 00:08:17,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-11-24 00:08:17,161 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:17,161 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:17,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:08:17,161 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:17,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:17,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1242166131, now seen corresponding path program 1 times [2024-11-24 00:08:17,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:17,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2615370] [2024-11-24 00:08:17,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:17,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-24 00:08:19,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:19,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2615370] [2024-11-24 00:08:19,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2615370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:08:19,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:08:19,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:08:19,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976604226] [2024-11-24 00:08:19,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:08:19,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:08:19,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:19,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:08:19,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:08:19,210 INFO L87 Difference]: Start difference. First operand 501 states and 837 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-24 00:08:20,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:20,288 INFO L93 Difference]: Finished difference Result 1351 states and 2264 transitions. [2024-11-24 00:08:20,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:08:20,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 534 [2024-11-24 00:08:20,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:20,305 INFO L225 Difference]: With dead ends: 1351 [2024-11-24 00:08:20,305 INFO L226 Difference]: Without dead ends: 853 [2024-11-24 00:08:20,308 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 00:08:20,310 INFO L435 NwaCegarLoop]: 400 mSDtfsCounter, 390 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:08:20,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1197 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 00:08:20,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2024-11-24 00:08:20,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 827. [2024-11-24 00:08:20,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 565 states have (on average 1.5486725663716814) internal successors, (875), 565 states have internal predecessors, (875), 258 states have call successors, (258), 3 states have call predecessors, (258), 3 states have return successors, (258), 258 states have call predecessors, (258), 258 states have call successors, (258) [2024-11-24 00:08:20,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1391 transitions. [2024-11-24 00:08:20,587 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1391 transitions. Word has length 534 [2024-11-24 00:08:20,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:20,590 INFO L471 AbstractCegarLoop]: Abstraction has 827 states and 1391 transitions. [2024-11-24 00:08:20,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-24 00:08:20,591 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1391 transitions. [2024-11-24 00:08:20,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-11-24 00:08:20,602 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:20,602 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:20,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:08:20,602 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:20,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:20,603 INFO L85 PathProgramCache]: Analyzing trace with hash -928965691, now seen corresponding path program 1 times [2024-11-24 00:08:20,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:20,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70495051] [2024-11-24 00:08:20,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:20,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2024-11-24 00:08:21,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:21,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70495051] [2024-11-24 00:08:21,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70495051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:08:21,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:08:21,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:08:21,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665529553] [2024-11-24 00:08:21,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:08:21,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:08:21,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:21,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:08:21,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:08:21,570 INFO L87 Difference]: Start difference. First operand 827 states and 1391 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-24 00:08:22,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:22,430 INFO L93 Difference]: Finished difference Result 1369 states and 2286 transitions. [2024-11-24 00:08:22,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:08:22,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 535 [2024-11-24 00:08:22,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:22,442 INFO L225 Difference]: With dead ends: 1369 [2024-11-24 00:08:22,442 INFO L226 Difference]: Without dead ends: 845 [2024-11-24 00:08:22,449 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 00:08:22,450 INFO L435 NwaCegarLoop]: 403 mSDtfsCounter, 380 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:08:22,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 1205 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:08:22,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-11-24 00:08:22,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 829. [2024-11-24 00:08:22,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 567 states have (on average 1.5432098765432098) internal successors, (875), 567 states have internal predecessors, (875), 258 states have call successors, (258), 3 states have call predecessors, (258), 3 states have return successors, (258), 258 states have call predecessors, (258), 258 states have call successors, (258) [2024-11-24 00:08:22,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1391 transitions. [2024-11-24 00:08:22,657 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1391 transitions. Word has length 535 [2024-11-24 00:08:22,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:22,661 INFO L471 AbstractCegarLoop]: Abstraction has 829 states and 1391 transitions. [2024-11-24 00:08:22,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2024-11-24 00:08:22,661 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1391 transitions. [2024-11-24 00:08:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-24 00:08:22,669 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:22,669 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:22,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:08:22,670 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:22,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:22,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1326362518, now seen corresponding path program 1 times [2024-11-24 00:08:22,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:22,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137703566] [2024-11-24 00:08:22,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:22,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:24,910 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 102 proven. 153 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2024-11-24 00:08:24,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:24,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137703566] [2024-11-24 00:08:24,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137703566] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:08:24,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930178354] [2024-11-24 00:08:24,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:24,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:24,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:08:24,918 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:08:24,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:08:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:25,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 00:08:25,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:08:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 8652 proven. 210 refuted. 0 times theorem prover too weak. 5758 trivial. 0 not checked. [2024-11-24 00:08:27,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:08:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 294 proven. 213 refuted. 0 times theorem prover too weak. 14113 trivial. 0 not checked. [2024-11-24 00:08:50,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930178354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:08:50,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:08:50,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2024-11-24 00:08:50,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207760692] [2024-11-24 00:08:50,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:08:50,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 00:08:50,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:50,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 00:08:50,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-24 00:08:50,095 INFO L87 Difference]: Start difference. First operand 829 states and 1391 transitions. Second operand has 19 states, 19 states have (on average 13.368421052631579) internal successors, (254), 19 states have internal predecessors, (254), 6 states have call successors, (213), 3 states have call predecessors, (213), 7 states have return successors, (214), 6 states have call predecessors, (214), 6 states have call successors, (214) [2024-11-24 00:09:03,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:09:03,793 INFO L93 Difference]: Finished difference Result 3738 states and 6230 transitions. [2024-11-24 00:09:03,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-24 00:09:03,795 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.368421052631579) internal successors, (254), 19 states have internal predecessors, (254), 6 states have call successors, (213), 3 states have call predecessors, (213), 7 states have return successors, (214), 6 states have call predecessors, (214), 6 states have call successors, (214) Word has length 536 [2024-11-24 00:09:03,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:09:03,818 INFO L225 Difference]: With dead ends: 3738 [2024-11-24 00:09:03,818 INFO L226 Difference]: Without dead ends: 3076 [2024-11-24 00:09:03,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1125 GetRequests, 1069 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=842, Invalid=2350, Unknown=0, NotChecked=0, Total=3192 [2024-11-24 00:09:03,824 INFO L435 NwaCegarLoop]: 316 mSDtfsCounter, 4758 mSDsluCounter, 2391 mSDsCounter, 0 mSdLazyCounter, 2640 mSolverCounterSat, 1822 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 4462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1822 IncrementalHoareTripleChecker+Valid, 2640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:09:03,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4803 Valid, 2707 Invalid, 4462 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1822 Valid, 2640 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2024-11-24 00:09:03,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2024-11-24 00:09:04,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3020. [2024-11-24 00:09:04,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3020 states, 2378 states have (on average 1.586627417998318) internal successors, (3773), 2384 states have internal predecessors, (3773), 614 states have call successors, (614), 27 states have call predecessors, (614), 27 states have return successors, (614), 608 states have call predecessors, (614), 614 states have call successors, (614) [2024-11-24 00:09:04,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 5001 transitions. [2024-11-24 00:09:04,295 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 5001 transitions. Word has length 536 [2024-11-24 00:09:04,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:09:04,299 INFO L471 AbstractCegarLoop]: Abstraction has 3020 states and 5001 transitions. [2024-11-24 00:09:04,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.368421052631579) internal successors, (254), 19 states have internal predecessors, (254), 6 states have call successors, (213), 3 states have call predecessors, (213), 7 states have return successors, (214), 6 states have call predecessors, (214), 6 states have call successors, (214) [2024-11-24 00:09:04,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 5001 transitions. [2024-11-24 00:09:04,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-24 00:09:04,307 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:09:04,308 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:09:04,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:09:04,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:09:04,510 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:09:04,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:09:04,511 INFO L85 PathProgramCache]: Analyzing trace with hash -432493782, now seen corresponding path program 1 times [2024-11-24 00:09:04,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:09:04,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202275526] [2024-11-24 00:09:04,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:09:04,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:09:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:09:05,664 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 120 proven. 135 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2024-11-24 00:09:05,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:09:05,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202275526] [2024-11-24 00:09:05,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202275526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:09:05,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628312478] [2024-11-24 00:09:05,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:09:05,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:09:05,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:09:05,668 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:09:05,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77076e00-f528-421c-9180-fbe89e80253b/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:09:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:09:06,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-24 00:09:06,162 INFO L279 TraceCheckSpWp]: Computing forward predicates...