./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-2.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_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/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_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/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_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/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 cb5120da282da0939ac8a01aef351f705e3e5f743c1237b3353ccb3b22ece68c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:52:27,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:52:27,924 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:52:27,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:52:27,933 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:52:27,976 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:52:27,977 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:52:27,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:52:27,978 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:52:27,978 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:52:27,979 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:52:27,979 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:52:27,979 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:52:27,979 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:52:27,980 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:52:27,980 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:52:27,980 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:52:27,980 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:52:27,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:52:27,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:52:27,981 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:52:27,981 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:52:27,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:52:27,981 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:52:27,981 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:52:27,981 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:52:27,982 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:52:27,982 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:52:27,982 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:52:27,982 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:52:27,982 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:52:27,983 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:52:27,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:52:27,983 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:52:27,983 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:52:27,983 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:52:27,983 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:52:27,984 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:52:27,984 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:52:27,984 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:52:27,984 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:52:27,984 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:52:27,984 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:52:27,984 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:52:27,985 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:52:27,985 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:52:27,985 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:52:27,985 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:52:27,985 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_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/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 -> cb5120da282da0939ac8a01aef351f705e3e5f743c1237b3353ccb3b22ece68c [2024-11-24 01:52:28,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:52:28,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:52:28,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:52:28,345 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:52:28,345 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:52:28,346 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-2.i [2024-11-24 01:52:31,713 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/data/b3d7e964f/e985c5f4970f452b9f848cb968260bc5/FLAG351cc1cd3 [2024-11-24 01:52:32,072 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:52:32,073 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-2.i [2024-11-24 01:52:32,083 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/data/b3d7e964f/e985c5f4970f452b9f848cb968260bc5/FLAG351cc1cd3 [2024-11-24 01:52:32,099 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/data/b3d7e964f/e985c5f4970f452b9f848cb968260bc5 [2024-11-24 01:52:32,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:52:32,103 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:52:32,105 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:52:32,105 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:52:32,111 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:52:32,112 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:52:32" (1/1) ... [2024-11-24 01:52:32,113 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b50b7b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:32, skipping insertion in model container [2024-11-24 01:52:32,113 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:52:32" (1/1) ... [2024-11-24 01:52:32,134 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:52:32,298 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_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-2.i[914,927] [2024-11-24 01:52:32,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:52:32,379 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:52:32,393 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_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-2.i[914,927] [2024-11-24 01:52:32,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:52:32,441 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:52:32,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:32 WrapperNode [2024-11-24 01:52:32,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:52:32,444 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:52:32,444 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:52:32,444 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:52:32,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:32" (1/1) ... [2024-11-24 01:52:32,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:32" (1/1) ... [2024-11-24 01:52:32,493 INFO L138 Inliner]: procedures = 26, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 87 [2024-11-24 01:52:32,494 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:52:32,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:52:32,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:52:32,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:52:32,506 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:32" (1/1) ... [2024-11-24 01:52:32,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:32" (1/1) ... [2024-11-24 01:52:32,509 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:32" (1/1) ... [2024-11-24 01:52:32,527 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 01:52:32,527 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:32" (1/1) ... [2024-11-24 01:52:32,527 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:32" (1/1) ... [2024-11-24 01:52:32,533 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:32" (1/1) ... [2024-11-24 01:52:32,534 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:32" (1/1) ... [2024-11-24 01:52:32,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:32" (1/1) ... [2024-11-24 01:52:32,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:32" (1/1) ... [2024-11-24 01:52:32,543 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:32" (1/1) ... [2024-11-24 01:52:32,550 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:52:32,557 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:52:32,557 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:52:32,557 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:52:32,558 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:32" (1/1) ... [2024-11-24 01:52:32,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:52:32,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:52:32,611 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:52:32,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:52:32,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:52:32,650 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:52:32,650 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:52:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:52:32,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:52:32,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:52:32,752 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:52:32,754 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:52:33,210 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-24 01:52:33,210 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:52:33,230 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:52:33,230 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 01:52:33,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:52:33 BoogieIcfgContainer [2024-11-24 01:52:33,232 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:52:33,235 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:52:33,235 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:52:33,244 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:52:33,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:52:32" (1/3) ... [2024-11-24 01:52:33,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189d0e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:52:33, skipping insertion in model container [2024-11-24 01:52:33,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:32" (2/3) ... [2024-11-24 01:52:33,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189d0e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:52:33, skipping insertion in model container [2024-11-24 01:52:33,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:52:33" (3/3) ... [2024-11-24 01:52:33,250 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-2.i [2024-11-24 01:52:33,271 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:52:33,275 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-1loop_file-2.i that has 2 procedures, 40 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:52:33,360 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:52:33,376 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;@78b59305, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:52:33,377 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:52:33,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 30 states have internal predecessors, (40), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-24 01:52:33,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-24 01:52:33,392 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:33,393 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:52:33,393 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:33,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:33,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1273043437, now seen corresponding path program 1 times [2024-11-24 01:52:33,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:33,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309508087] [2024-11-24 01:52:33,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:33,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-24 01:52:33,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:33,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309508087] [2024-11-24 01:52:33,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309508087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:52:33,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733390409] [2024-11-24 01:52:33,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:33,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:52:33,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:52:33,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:52:33,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:52:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:33,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:52:34,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:52:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-24 01:52:34,038 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:52:34,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733390409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:34,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:52:34,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 01:52:34,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566205419] [2024-11-24 01:52:34,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:34,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:52:34,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:34,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:52:34,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:52:34,074 INFO L87 Difference]: Start difference. First operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 30 states have internal predecessors, (40), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:52:34,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:34,098 INFO L93 Difference]: Finished difference Result 77 states and 117 transitions. [2024-11-24 01:52:34,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:52:34,101 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2024-11-24 01:52:34,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:34,111 INFO L225 Difference]: With dead ends: 77 [2024-11-24 01:52:34,111 INFO L226 Difference]: Without dead ends: 36 [2024-11-24 01:52:34,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:52:34,120 INFO L435 NwaCegarLoop]: 53 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, 53 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:34,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:52:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-24 01:52:34,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-24 01:52:34,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-24 01:52:34,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 49 transitions. [2024-11-24 01:52:34,164 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 49 transitions. Word has length 59 [2024-11-24 01:52:34,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:34,164 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 49 transitions. [2024-11-24 01:52:34,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:52:34,165 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 49 transitions. [2024-11-24 01:52:34,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-24 01:52:34,168 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:34,168 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:52:34,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 01:52:34,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:52:34,373 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:34,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:34,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1923123693, now seen corresponding path program 1 times [2024-11-24 01:52:34,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:34,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962947561] [2024-11-24 01:52:34,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:34,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:52,480 WARN L286 SmtUtils]: Spent 9.07s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:52:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-24 01:52:55,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:55,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962947561] [2024-11-24 01:52:55,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962947561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:55,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:55,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 01:52:55,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878731192] [2024-11-24 01:52:55,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:55,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:52:55,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:55,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:52:55,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:52:55,237 INFO L87 Difference]: Start difference. First operand 36 states and 49 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:53:01,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:01,994 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2024-11-24 01:53:01,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:53:01,996 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 59 [2024-11-24 01:53:01,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:01,998 INFO L225 Difference]: With dead ends: 75 [2024-11-24 01:53:01,998 INFO L226 Difference]: Without dead ends: 73 [2024-11-24 01:53:01,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:53:02,001 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 86 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:02,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 182 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 01:53:02,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-24 01:53:02,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 43. [2024-11-24 01:53:02,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-24 01:53:02,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2024-11-24 01:53:02,018 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 59 [2024-11-24 01:53:02,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:02,020 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2024-11-24 01:53:02,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:53:02,021 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2024-11-24 01:53:02,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-24 01:53:02,024 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:02,025 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:02,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:53:02,025 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:02,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:02,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1691785233, now seen corresponding path program 1 times [2024-11-24 01:53:02,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:02,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119013676] [2024-11-24 01:53:02,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:02,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:02,411 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-24 01:53:02,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:02,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119013676] [2024-11-24 01:53:02,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119013676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:02,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:02,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:53:02,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465122899] [2024-11-24 01:53:02,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:02,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:53:02,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:02,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:53:02,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:53:02,418 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:53:02,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:02,731 INFO L93 Difference]: Finished difference Result 128 states and 174 transitions. [2024-11-24 01:53:02,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:53:02,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2024-11-24 01:53:02,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:02,734 INFO L225 Difference]: With dead ends: 128 [2024-11-24 01:53:02,735 INFO L226 Difference]: Without dead ends: 88 [2024-11-24 01:53:02,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:53:02,736 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 78 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:02,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 216 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:53:02,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-24 01:53:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 74. [2024-11-24 01:53:02,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 55 states have internal predecessors, (70), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-24 01:53:02,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 102 transitions. [2024-11-24 01:53:02,760 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 102 transitions. Word has length 59 [2024-11-24 01:53:02,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:02,761 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 102 transitions. [2024-11-24 01:53:02,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 01:53:02,761 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 102 transitions. [2024-11-24 01:53:02,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-24 01:53:02,762 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:02,762 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:02,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:53:02,763 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:02,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:02,763 INFO L85 PathProgramCache]: Analyzing trace with hash 347144461, now seen corresponding path program 1 times [2024-11-24 01:53:02,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:02,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29296340] [2024-11-24 01:53:02,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:02,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:04,650 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-24 01:53:04,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:04,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29296340] [2024-11-24 01:53:04,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29296340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:04,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:04,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:53:04,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17388715] [2024-11-24 01:53:04,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:04,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:53:04,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:04,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:53:04,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:53:04,653 INFO L87 Difference]: Start difference. First operand 74 states and 102 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:53:05,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:05,199 INFO L93 Difference]: Finished difference Result 140 states and 189 transitions. [2024-11-24 01:53:05,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:53:05,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 60 [2024-11-24 01:53:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:05,202 INFO L225 Difference]: With dead ends: 140 [2024-11-24 01:53:05,202 INFO L226 Difference]: Without dead ends: 100 [2024-11-24 01:53:05,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:53:05,204 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 61 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:05,204 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 167 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:53:05,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-24 01:53:05,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 77. [2024-11-24 01:53:05,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 58 states have (on average 1.2758620689655173) internal successors, (74), 58 states have internal predecessors, (74), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-24 01:53:05,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 106 transitions. [2024-11-24 01:53:05,231 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 106 transitions. Word has length 60 [2024-11-24 01:53:05,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:05,231 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 106 transitions. [2024-11-24 01:53:05,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:53:05,232 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 106 transitions. [2024-11-24 01:53:05,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-24 01:53:05,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:05,236 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:05,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:53:05,236 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:05,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:05,237 INFO L85 PathProgramCache]: Analyzing trace with hash 2122151823, now seen corresponding path program 1 times [2024-11-24 01:53:05,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:05,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34257731] [2024-11-24 01:53:05,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:05,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-24 01:53:05,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:05,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34257731] [2024-11-24 01:53:05,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34257731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:05,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:05,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:53:05,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605390211] [2024-11-24 01:53:05,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:05,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:53:05,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:05,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:53:05,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:53:05,322 INFO L87 Difference]: Start difference. First operand 77 states and 106 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:53:05,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:05,370 INFO L93 Difference]: Finished difference Result 191 states and 260 transitions. [2024-11-24 01:53:05,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:53:05,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 60 [2024-11-24 01:53:05,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:05,373 INFO L225 Difference]: With dead ends: 191 [2024-11-24 01:53:05,376 INFO L226 Difference]: Without dead ends: 117 [2024-11-24 01:53:05,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:53:05,378 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 30 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:05,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 111 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:53:05,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-24 01:53:05,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2024-11-24 01:53:05,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 80 states have (on average 1.2) internal successors, (96), 82 states have internal predecessors, (96), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (28), 26 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-24 01:53:05,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 152 transitions. [2024-11-24 01:53:05,415 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 152 transitions. Word has length 60 [2024-11-24 01:53:05,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:05,416 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 152 transitions. [2024-11-24 01:53:05,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:53:05,416 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 152 transitions. [2024-11-24 01:53:05,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-24 01:53:05,418 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:05,419 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:05,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:53:05,419 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:05,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:05,420 INFO L85 PathProgramCache]: Analyzing trace with hash -896031329, now seen corresponding path program 1 times [2024-11-24 01:53:05,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:05,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739420304] [2024-11-24 01:53:05,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:05,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:05,713 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-24 01:53:05,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:05,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739420304] [2024-11-24 01:53:05,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739420304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:05,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:05,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:53:05,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306097544] [2024-11-24 01:53:05,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:05,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:53:05,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:05,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:53:05,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:53:05,718 INFO L87 Difference]: Start difference. First operand 113 states and 152 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:53:06,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:06,061 INFO L93 Difference]: Finished difference Result 287 states and 381 transitions. [2024-11-24 01:53:06,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:53:06,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 60 [2024-11-24 01:53:06,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:06,065 INFO L225 Difference]: With dead ends: 287 [2024-11-24 01:53:06,066 INFO L226 Difference]: Without dead ends: 188 [2024-11-24 01:53:06,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:53:06,071 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 64 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:06,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 197 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:53:06,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-24 01:53:06,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 170. [2024-11-24 01:53:06,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 125 states have (on average 1.208) internal successors, (151), 126 states have internal predecessors, (151), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-24 01:53:06,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 227 transitions. [2024-11-24 01:53:06,131 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 227 transitions. Word has length 60 [2024-11-24 01:53:06,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:06,136 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 227 transitions. [2024-11-24 01:53:06,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:53:06,136 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 227 transitions. [2024-11-24 01:53:06,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-24 01:53:06,137 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:06,137 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:06,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:53:06,137 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:06,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:06,138 INFO L85 PathProgramCache]: Analyzing trace with hash -45882549, now seen corresponding path program 1 times [2024-11-24 01:53:06,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:06,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142360058] [2024-11-24 01:53:06,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:06,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:07,781 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-24 01:53:07,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:07,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142360058] [2024-11-24 01:53:07,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142360058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:07,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:07,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:53:07,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452138525] [2024-11-24 01:53:07,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:07,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:53:07,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:07,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:53:07,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:53:07,784 INFO L87 Difference]: Start difference. First operand 170 states and 227 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:53:08,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:08,412 INFO L93 Difference]: Finished difference Result 257 states and 340 transitions. [2024-11-24 01:53:08,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:53:08,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 60 [2024-11-24 01:53:08,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:08,416 INFO L225 Difference]: With dead ends: 257 [2024-11-24 01:53:08,416 INFO L226 Difference]: Without dead ends: 192 [2024-11-24 01:53:08,417 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:53:08,418 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 22 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:08,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 192 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:53:08,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-24 01:53:08,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 168. [2024-11-24 01:53:08,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 123 states have (on average 1.1951219512195121) internal successors, (147), 124 states have internal predecessors, (147), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-24 01:53:08,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 223 transitions. [2024-11-24 01:53:08,467 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 223 transitions. Word has length 60 [2024-11-24 01:53:08,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:08,467 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 223 transitions. [2024-11-24 01:53:08,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:53:08,468 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 223 transitions. [2024-11-24 01:53:08,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-24 01:53:08,470 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:08,470 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:08,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:53:08,471 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:08,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:08,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1956436221, now seen corresponding path program 1 times [2024-11-24 01:53:08,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:08,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024415435] [2024-11-24 01:53:08,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:08,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-24 01:53:08,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:08,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024415435] [2024-11-24 01:53:08,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024415435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:08,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:08,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:53:08,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103100587] [2024-11-24 01:53:08,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:08,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:53:08,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:08,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:53:08,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:53:08,693 INFO L87 Difference]: Start difference. First operand 168 states and 223 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:53:08,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:08,862 INFO L93 Difference]: Finished difference Result 284 states and 373 transitions. [2024-11-24 01:53:08,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:53:08,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 61 [2024-11-24 01:53:08,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:08,865 INFO L225 Difference]: With dead ends: 284 [2024-11-24 01:53:08,865 INFO L226 Difference]: Without dead ends: 186 [2024-11-24 01:53:08,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:53:08,866 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 50 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:08,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 152 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:53:08,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-24 01:53:08,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 170. [2024-11-24 01:53:08,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 125 states have (on average 1.192) internal successors, (149), 126 states have internal predecessors, (149), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-24 01:53:08,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 225 transitions. [2024-11-24 01:53:08,906 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 225 transitions. Word has length 61 [2024-11-24 01:53:08,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:08,907 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 225 transitions. [2024-11-24 01:53:08,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:53:08,909 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 225 transitions. [2024-11-24 01:53:08,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-24 01:53:08,910 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:08,910 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:08,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:53:08,914 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:08,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:08,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1954589179, now seen corresponding path program 1 times [2024-11-24 01:53:08,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:08,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721489303] [2024-11-24 01:53:08,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:08,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-24 01:53:12,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:12,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721489303] [2024-11-24 01:53:12,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721489303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:12,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:12,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:53:12,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148487856] [2024-11-24 01:53:12,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:12,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 01:53:12,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:12,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 01:53:12,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:53:12,730 INFO L87 Difference]: Start difference. First operand 170 states and 225 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:53:13,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:13,368 INFO L93 Difference]: Finished difference Result 215 states and 274 transitions. [2024-11-24 01:53:13,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:53:13,371 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 61 [2024-11-24 01:53:13,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:13,373 INFO L225 Difference]: With dead ends: 215 [2024-11-24 01:53:13,374 INFO L226 Difference]: Without dead ends: 213 [2024-11-24 01:53:13,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:53:13,375 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 43 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:13,375 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 211 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:53:13,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-24 01:53:13,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 183. [2024-11-24 01:53:13,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 138 states have (on average 1.2028985507246377) internal successors, (166), 139 states have internal predecessors, (166), 38 states have call successors, (38), 6 states have call predecessors, (38), 6 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-24 01:53:13,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 242 transitions. [2024-11-24 01:53:13,410 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 242 transitions. Word has length 61 [2024-11-24 01:53:13,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:13,411 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 242 transitions. [2024-11-24 01:53:13,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:53:13,411 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 242 transitions. [2024-11-24 01:53:13,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-24 01:53:13,413 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:13,413 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:13,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:53:13,413 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:13,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:13,414 INFO L85 PathProgramCache]: Analyzing trace with hash 591048165, now seen corresponding path program 1 times [2024-11-24 01:53:13,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:13,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578055773] [2024-11-24 01:53:13,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:13,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:17,164 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-24 01:53:17,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:17,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578055773] [2024-11-24 01:53:17,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578055773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:17,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:17,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-24 01:53:17,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266540773] [2024-11-24 01:53:17,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:17,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 01:53:17,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:17,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 01:53:17,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:53:17,166 INFO L87 Difference]: Start difference. First operand 183 states and 242 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:53:19,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:19,549 INFO L93 Difference]: Finished difference Result 266 states and 340 transitions. [2024-11-24 01:53:19,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-24 01:53:19,550 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 62 [2024-11-24 01:53:19,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:19,553 INFO L225 Difference]: With dead ends: 266 [2024-11-24 01:53:19,556 INFO L226 Difference]: Without dead ends: 264 [2024-11-24 01:53:19,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2024-11-24 01:53:19,557 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 131 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:19,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 278 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 01:53:19,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-24 01:53:19,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 220. [2024-11-24 01:53:19,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 166 states have (on average 1.1987951807228916) internal successors, (199), 167 states have internal predecessors, (199), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-24 01:53:19,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 291 transitions. [2024-11-24 01:53:19,590 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 291 transitions. Word has length 62 [2024-11-24 01:53:19,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:19,591 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 291 transitions. [2024-11-24 01:53:19,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-24 01:53:19,592 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 291 transitions. [2024-11-24 01:53:19,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-24 01:53:19,593 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:19,594 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:19,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:53:19,594 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:19,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:19,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1668099364, now seen corresponding path program 1 times [2024-11-24 01:53:19,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:19,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153375333] [2024-11-24 01:53:19,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:19,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 01:53:19,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:19,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153375333] [2024-11-24 01:53:19,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153375333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:53:19,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276500854] [2024-11-24 01:53:19,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:19,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:19,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:53:19,707 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:53:19,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:53:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:19,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:53:19,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:53:19,944 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-11-24 01:53:19,945 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:53:19,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276500854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:19,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:53:19,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-24 01:53:19,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777680135] [2024-11-24 01:53:19,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:19,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:53:19,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:19,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:53:19,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:53:19,947 INFO L87 Difference]: Start difference. First operand 220 states and 291 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:53:19,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:20,001 INFO L93 Difference]: Finished difference Result 250 states and 324 transitions. [2024-11-24 01:53:20,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:53:20,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 115 [2024-11-24 01:53:20,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:20,010 INFO L225 Difference]: With dead ends: 250 [2024-11-24 01:53:20,013 INFO L226 Difference]: Without dead ends: 0 [2024-11-24 01:53:20,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 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 01:53:20,015 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:20,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 76 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:53:20,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-24 01:53:20,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-24 01:53:20,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:53:20,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-24 01:53:20,018 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 115 [2024-11-24 01:53:20,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:20,021 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 01:53:20,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 01:53:20,022 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-24 01:53:20,022 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-24 01:53:20,025 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-24 01:53:20,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:53:20,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:20,235 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:20,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-24 01:53:22,069 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 01:53:22,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 01:53:22 BoogieIcfgContainer [2024-11-24 01:53:22,101 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 01:53:22,101 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 01:53:22,101 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 01:53:22,102 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 01:53:22,103 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:52:33" (3/4) ... [2024-11-24 01:53:22,106 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-24 01:53:22,112 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-24 01:53:22,117 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-24 01:53:22,118 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-24 01:53:22,118 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-24 01:53:22,118 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-24 01:53:22,216 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-24 01:53:22,217 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-24 01:53:22,217 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 01:53:22,218 INFO L158 Benchmark]: Toolchain (without parser) took 50114.45ms. Allocated memory was 117.4MB in the beginning and 276.8MB in the end (delta: 159.4MB). Free memory was 92.7MB in the beginning and 168.5MB in the end (delta: -75.8MB). Peak memory consumption was 81.6MB. Max. memory is 16.1GB. [2024-11-24 01:53:22,218 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 117.4MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:53:22,219 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.12ms. Allocated memory is still 117.4MB. Free memory was 92.5MB in the beginning and 79.9MB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:53:22,219 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.26ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 77.6MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:53:22,219 INFO L158 Benchmark]: Boogie Preprocessor took 59.71ms. Allocated memory is still 117.4MB. Free memory was 77.6MB in the beginning and 74.1MB in the end (delta: 3.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:53:22,220 INFO L158 Benchmark]: RCFGBuilder took 675.08ms. Allocated memory is still 117.4MB. Free memory was 74.1MB in the beginning and 59.3MB in the end (delta: 14.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 01:53:22,220 INFO L158 Benchmark]: TraceAbstraction took 48866.03ms. Allocated memory was 117.4MB in the beginning and 276.8MB in the end (delta: 159.4MB). Free memory was 58.8MB in the beginning and 176.5MB in the end (delta: -117.8MB). Peak memory consumption was 124.6MB. Max. memory is 16.1GB. [2024-11-24 01:53:22,221 INFO L158 Benchmark]: Witness Printer took 115.49ms. Allocated memory is still 276.8MB. Free memory was 176.5MB in the beginning and 168.5MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:53:22,223 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 117.4MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 338.12ms. Allocated memory is still 117.4MB. Free memory was 92.5MB in the beginning and 79.9MB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.26ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 77.6MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.71ms. Allocated memory is still 117.4MB. Free memory was 77.6MB in the beginning and 74.1MB in the end (delta: 3.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 675.08ms. Allocated memory is still 117.4MB. Free memory was 74.1MB in the beginning and 59.3MB in the end (delta: 14.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 48866.03ms. Allocated memory was 117.4MB in the beginning and 276.8MB in the end (delta: 159.4MB). Free memory was 58.8MB in the beginning and 176.5MB in the end (delta: -117.8MB). Peak memory consumption was 124.6MB. Max. memory is 16.1GB. * Witness Printer took 115.49ms. Allocated memory is still 276.8MB. Free memory was 176.5MB in the beginning and 168.5MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 46.9s, OverallIterations: 11, TraceHistogramMax: 16, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 12.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 572 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 572 mSDsluCounter, 1835 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1253 mSDsCounter, 158 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 995 IncrementalHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 158 mSolverCounterUnsat, 582 mSDtfsCounter, 995 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 289 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 20.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=220occurred in iteration=10, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 203 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 32.8s InterpolantComputationTime, 890 NumberOfCodeBlocks, 890 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 877 ConstructedInterpolants, 0 QuantifiedInterpolants, 5471 SizeOfPredicates, 0 NumberOfNonLiveVariables, 425 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 2223/2238 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 87]: Loop Invariant Derived loop invariant: ((((((((var_1_12 == var_1_5) && (last_1_var_1_10 == 1)) && (1 <= k_loop)) && (var_1_10 == 1)) && (var_1_7 == var_1_11)) && ((((((var_1_5 < (var_1_7 + 1)) || (var_1_1 == var_1_5)) && ((var_1_7 < var_1_5) || (var_1_7 == var_1_1))) || (var_1_7 < var_1_6)) && ((((var_1_6 < var_1_5) || (var_1_6 == var_1_1)) && ((var_1_5 < (var_1_6 + 1)) || (var_1_1 == var_1_5))) || (var_1_6 < (var_1_7 + 1)))) || (((long long) var_1_12 * var_1_11) < var_1_11))) || (((((var_1_12 == var_1_5) && (1 <= k_loop)) && (var_1_9 == 0)) && (var_1_7 == var_1_11)) && ((((((var_1_5 < (var_1_7 + 1)) || (var_1_1 == var_1_5)) && ((var_1_7 < var_1_5) || (var_1_7 == var_1_1))) || (var_1_7 < var_1_6)) && ((((var_1_6 < var_1_5) || (var_1_6 == var_1_1)) && ((var_1_5 < (var_1_6 + 1)) || (var_1_1 == var_1_5))) || (var_1_6 < (var_1_7 + 1)))) || (((long long) var_1_12 * var_1_11) < var_1_11)))) || ((((((last_1_var_1_10 == 1) && (var_1_10 == 1)) && (var_1_1 == 10)) && (0 <= k_loop)) && (var_1_8 == 128)) && (128 == last_1_var_1_8))) RESULT: Ultimate proved your program to be correct! [2024-11-24 01:53:22,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ab1af6c-04fa-4637-9b5a-35d32cd6bfc0/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE