./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB --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 05acb47e03e235712ff531dc9c262bde9a4e8849999fe7c0ae66487e3d96b2b6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:15:28,110 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:15:28,219 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 05:15:28,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:15:28,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:15:28,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:15:28,262 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:15:28,262 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:15:28,262 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:15:28,263 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:15:28,263 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:15:28,263 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:15:28,264 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:15:28,264 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:15:28,264 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:15:28,264 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:15:28,264 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:15:28,265 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:15:28,265 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:15:28,265 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:15:28,265 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:15:28,266 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:15:28,266 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:15:28,266 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:15:28,266 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:15:28,266 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:15:28,266 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:15:28,267 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:15:28,267 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:15:28,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:15:28,267 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:15:28,267 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:15:28,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:15:28,268 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:15:28,268 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:15:28,268 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:15:28,268 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:15:28,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:15:28,269 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:15:28,269 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:15:28,269 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:15:28,269 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:15:28,269 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:15:28,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:15:28,270 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:15:28,270 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:15:28,270 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:15:28,270 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:15:28,270 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_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 05acb47e03e235712ff531dc9c262bde9a4e8849999fe7c0ae66487e3d96b2b6 [2024-11-28 05:15:28,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:15:28,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:15:28,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:15:28,707 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:15:28,708 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:15:28,709 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-12.i [2024-11-28 05:15:32,161 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/data/3da5941e7/ab45341660954c15af72ff3228ea75a2/FLAG91d1de960 [2024-11-28 05:15:32,469 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:15:32,473 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-12.i [2024-11-28 05:15:32,491 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/data/3da5941e7/ab45341660954c15af72ff3228ea75a2/FLAG91d1de960 [2024-11-28 05:15:32,511 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/data/3da5941e7/ab45341660954c15af72ff3228ea75a2 [2024-11-28 05:15:32,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:15:32,516 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:15:32,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:15:32,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:15:32,523 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:15:32,524 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:15:32" (1/1) ... [2024-11-28 05:15:32,525 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec07033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:15:32, skipping insertion in model container [2024-11-28 05:15:32,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:15:32" (1/1) ... [2024-11-28 05:15:32,553 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:15:32,779 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_f467542a-c6ff-442a-a5fd-47572eec1a06/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-12.i[917,930] [2024-11-28 05:15:32,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:15:32,891 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:15:32,904 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_f467542a-c6ff-442a-a5fd-47572eec1a06/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-12.i[917,930] [2024-11-28 05:15:32,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:15:32,971 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:15:32,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:15:32 WrapperNode [2024-11-28 05:15:32,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:15:32,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:15:32,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:15:32,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:15:32,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:15:32" (1/1) ... [2024-11-28 05:15:32,997 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:15:32" (1/1) ... [2024-11-28 05:15:33,065 INFO L138 Inliner]: procedures = 27, calls = 151, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 454 [2024-11-28 05:15:33,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:15:33,066 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:15:33,066 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:15:33,066 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:15:33,083 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:15:32" (1/1) ... [2024-11-28 05:15:33,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:15:32" (1/1) ... [2024-11-28 05:15:33,089 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:15:32" (1/1) ... [2024-11-28 05:15:33,112 INFO L175 MemorySlicer]: Split 124 memory accesses to 2 slices as follows [2, 122]. 98 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 26 writes are split as follows [0, 26]. [2024-11-28 05:15:33,112 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:15:32" (1/1) ... [2024-11-28 05:15:33,112 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:15:32" (1/1) ... [2024-11-28 05:15:33,128 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:15:32" (1/1) ... [2024-11-28 05:15:33,129 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:15:32" (1/1) ... [2024-11-28 05:15:33,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:15:32" (1/1) ... [2024-11-28 05:15:33,145 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:15:32" (1/1) ... [2024-11-28 05:15:33,147 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:15:32" (1/1) ... [2024-11-28 05:15:33,159 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:15:33,160 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:15:33,161 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:15:33,161 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:15:33,162 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:15:32" (1/1) ... [2024-11-28 05:15:33,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:15:33,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:33,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:15:33,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:15:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:15:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 05:15:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 05:15:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:15:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 05:15:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 05:15:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 05:15:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 05:15:33,262 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 05:15:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:15:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 05:15:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:15:33,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:15:33,464 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:15:33,467 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:15:34,188 INFO L? ?]: Removed 131 outVars from TransFormulas that were not future-live. [2024-11-28 05:15:34,188 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:15:34,202 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:15:34,203 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 05:15:34,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:15:34 BoogieIcfgContainer [2024-11-28 05:15:34,203 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:15:34,206 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:15:34,206 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:15:34,212 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:15:34,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:15:32" (1/3) ... [2024-11-28 05:15:34,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2134c0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:15:34, skipping insertion in model container [2024-11-28 05:15:34,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:15:32" (2/3) ... [2024-11-28 05:15:34,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2134c0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:15:34, skipping insertion in model container [2024-11-28 05:15:34,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:15:34" (3/3) ... [2024-11-28 05:15:34,215 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-12.i [2024-11-28 05:15:34,234 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:15:34,236 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-sp_file-12.i that has 2 procedures, 98 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 05:15:34,301 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:15:34,313 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;@6da278fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:15:34,314 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:15:34,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 05:15:34,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 05:15:34,333 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:34,334 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:34,334 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:34,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:34,339 INFO L85 PathProgramCache]: Analyzing trace with hash -7132500, now seen corresponding path program 1 times [2024-11-28 05:15:34,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:34,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729492443] [2024-11-28 05:15:34,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:34,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:34,842 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-11-28 05:15:34,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:34,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729492443] [2024-11-28 05:15:34,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729492443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:15:34,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860297637] [2024-11-28 05:15:34,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:34,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:34,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:34,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:34,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:15:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:35,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 05:15:35,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:35,205 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-11-28 05:15:35,205 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:15:35,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860297637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:35,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:15:35,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 05:15:35,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807118807] [2024-11-28 05:15:35,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:35,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 05:15:35,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:35,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 05:15:35,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:15:35,245 INFO L87 Difference]: Start difference. First operand has 98 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 05:15:35,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:35,292 INFO L93 Difference]: Finished difference Result 183 states and 284 transitions. [2024-11-28 05:15:35,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 05:15:35,294 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 117 [2024-11-28 05:15:35,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:35,306 INFO L225 Difference]: With dead ends: 183 [2024-11-28 05:15:35,307 INFO L226 Difference]: Without dead ends: 88 [2024-11-28 05:15:35,311 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:15:35,318 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:35,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:15:35,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-28 05:15:35,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-28 05:15:35,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 70 states have (on average 1.3) internal successors, (91), 70 states have internal predecessors, (91), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 05:15:35,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 123 transitions. [2024-11-28 05:15:35,383 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 123 transitions. Word has length 117 [2024-11-28 05:15:35,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:35,384 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 123 transitions. [2024-11-28 05:15:35,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 05:15:35,385 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 123 transitions. [2024-11-28 05:15:35,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 05:15:35,390 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:35,391 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:35,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:15:35,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:35,592 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:35,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:35,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1325197964, now seen corresponding path program 1 times [2024-11-28 05:15:35,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:35,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018968343] [2024-11-28 05:15:35,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:35,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-28 05:15:36,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:36,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018968343] [2024-11-28 05:15:36,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018968343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:15:36,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482262742] [2024-11-28 05:15:36,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:36,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:36,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:36,219 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:36,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:15:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:36,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:15:36,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:15:36,520 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:15:36,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482262742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:36,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:15:36,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-11-28 05:15:36,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921355205] [2024-11-28 05:15:36,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:36,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:15:36,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:36,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:15:36,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:15:36,523 INFO L87 Difference]: Start difference. First operand 88 states and 123 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:15:36,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:36,581 INFO L93 Difference]: Finished difference Result 173 states and 243 transitions. [2024-11-28 05:15:36,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:15:36,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 117 [2024-11-28 05:15:36,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:36,583 INFO L225 Difference]: With dead ends: 173 [2024-11-28 05:15:36,584 INFO L226 Difference]: Without dead ends: 88 [2024-11-28 05:15:36,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:15:36,585 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 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 [2024-11-28 05:15:36,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:15:36,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-28 05:15:36,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-28 05:15:36,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 70 states have internal predecessors, (90), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 05:15:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 122 transitions. [2024-11-28 05:15:36,597 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 122 transitions. Word has length 117 [2024-11-28 05:15:36,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:36,599 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 122 transitions. [2024-11-28 05:15:36,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:15:36,600 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 122 transitions. [2024-11-28 05:15:36,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-28 05:15:36,602 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:36,602 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:36,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 05:15:36,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:36,803 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:36,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:36,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1498089034, now seen corresponding path program 1 times [2024-11-28 05:15:36,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:36,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451776151] [2024-11-28 05:15:36,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:36,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:37,250 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-28 05:15:37,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:37,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451776151] [2024-11-28 05:15:37,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451776151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:15:37,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974161432] [2024-11-28 05:15:37,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:37,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:37,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:37,254 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:37,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:15:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:37,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:15:37,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:37,556 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:15:37,556 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:15:37,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974161432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:37,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:15:37,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-28 05:15:37,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966898093] [2024-11-28 05:15:37,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:37,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:15:37,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:37,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:15:37,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:15:37,558 INFO L87 Difference]: Start difference. First operand 88 states and 122 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:15:37,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:37,627 INFO L93 Difference]: Finished difference Result 176 states and 245 transitions. [2024-11-28 05:15:37,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:15:37,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2024-11-28 05:15:37,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:37,635 INFO L225 Difference]: With dead ends: 176 [2024-11-28 05:15:37,635 INFO L226 Difference]: Without dead ends: 91 [2024-11-28 05:15:37,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:15:37,640 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:37,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 461 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:15:37,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-28 05:15:37,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-28 05:15:37,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 73 states have (on average 1.273972602739726) internal successors, (93), 73 states have internal predecessors, (93), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 05:15:37,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2024-11-28 05:15:37,661 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 119 [2024-11-28 05:15:37,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:37,662 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2024-11-28 05:15:37,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:15:37,663 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2024-11-28 05:15:37,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-28 05:15:37,667 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:37,667 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:37,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 05:15:37,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:37,868 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:37,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:37,868 INFO L85 PathProgramCache]: Analyzing trace with hash -183251538, now seen corresponding path program 1 times [2024-11-28 05:15:37,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:37,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191640805] [2024-11-28 05:15:37,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:37,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:15:39,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:39,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191640805] [2024-11-28 05:15:39,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191640805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:39,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:39,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 05:15:39,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588906524] [2024-11-28 05:15:39,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:39,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:15:39,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:39,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:15:39,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:15:39,793 INFO L87 Difference]: Start difference. First operand 91 states and 125 transitions. Second operand has 11 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 05:15:40,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:40,628 INFO L93 Difference]: Finished difference Result 133 states and 177 transitions. [2024-11-28 05:15:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:15:40,629 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 121 [2024-11-28 05:15:40,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:40,631 INFO L225 Difference]: With dead ends: 133 [2024-11-28 05:15:40,631 INFO L226 Difference]: Without dead ends: 131 [2024-11-28 05:15:40,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:15:40,634 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 379 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:40,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 468 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:15:40,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-28 05:15:40,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2024-11-28 05:15:40,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 98 states have (on average 1.2755102040816326) internal successors, (125), 98 states have internal predecessors, (125), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 05:15:40,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 157 transitions. [2024-11-28 05:15:40,665 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 157 transitions. Word has length 121 [2024-11-28 05:15:40,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:40,666 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 157 transitions. [2024-11-28 05:15:40,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 05:15:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 157 transitions. [2024-11-28 05:15:40,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-28 05:15:40,668 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:40,668 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:40,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:15:40,668 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:40,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:40,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1588599541, now seen corresponding path program 1 times [2024-11-28 05:15:40,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:40,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345682654] [2024-11-28 05:15:40,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:40,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:43,955 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 108 proven. 36 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-28 05:15:43,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:43,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345682654] [2024-11-28 05:15:43,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345682654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:15:43,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993011254] [2024-11-28 05:15:43,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:43,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:43,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:43,958 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:43,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:15:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:44,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-28 05:15:44,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:45,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:15:46,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:15:47,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:15:47,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:15:48,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:15:49,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:15:49,834 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 05:15:49,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2024-11-28 05:15:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 252 proven. 96 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-28 05:15:50,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:16:10,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993011254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:16:10,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:16:10,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26] total 42 [2024-11-28 05:16:10,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379003810] [2024-11-28 05:16:10,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:16:10,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-28 05:16:10,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:10,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-28 05:16:10,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=2572, Unknown=1, NotChecked=0, Total=2862 [2024-11-28 05:16:10,686 INFO L87 Difference]: Start difference. First operand 116 states and 157 transitions. Second operand has 42 states, 34 states have (on average 3.1470588235294117) internal successors, (107), 37 states have internal predecessors, (107), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-28 05:16:23,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:16:23,695 INFO L93 Difference]: Finished difference Result 241 states and 308 transitions. [2024-11-28 05:16:23,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-28 05:16:23,696 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 34 states have (on average 3.1470588235294117) internal successors, (107), 37 states have internal predecessors, (107), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) Word has length 122 [2024-11-28 05:16:23,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:16:23,699 INFO L225 Difference]: With dead ends: 241 [2024-11-28 05:16:23,699 INFO L226 Difference]: Without dead ends: 239 [2024-11-28 05:16:23,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=937, Invalid=5224, Unknown=1, NotChecked=0, Total=6162 [2024-11-28 05:16:23,707 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 429 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 2683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:16:23,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1203 Invalid, 2683 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2024-11-28 05:16:23,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-28 05:16:23,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 184. [2024-11-28 05:16:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 156 states have (on average 1.2564102564102564) internal successors, (196), 157 states have internal predecessors, (196), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 05:16:23,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 240 transitions. [2024-11-28 05:16:23,749 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 240 transitions. Word has length 122 [2024-11-28 05:16:23,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:16:23,750 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 240 transitions. [2024-11-28 05:16:23,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 34 states have (on average 3.1470588235294117) internal successors, (107), 37 states have internal predecessors, (107), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-28 05:16:23,751 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 240 transitions. [2024-11-28 05:16:23,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-28 05:16:23,753 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:16:23,753 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:16:23,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 05:16:23,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:23,957 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:16:23,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:23,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1589190883, now seen corresponding path program 1 times [2024-11-28 05:16:23,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:23,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769546954] [2024-11-28 05:16:23,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:23,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:28,556 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 108 proven. 36 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-28 05:16:28,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:28,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769546954] [2024-11-28 05:16:28,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769546954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:16:28,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905645777] [2024-11-28 05:16:28,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:28,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:28,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:28,561 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:28,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:16:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:28,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-28 05:16:28,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:31,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:16:33,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:16:33,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:16:34,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:16:35,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:16:38,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:16:38,264 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 05:16:38,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2024-11-28 05:16:39,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:16:39,519 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-28 05:16:39,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 34 [2024-11-28 05:16:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 252 proven. 96 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-28 05:16:40,122 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:16:58,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905645777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:16:58,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:16:58,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 27] total 44 [2024-11-28 05:16:58,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661016760] [2024-11-28 05:16:58,562 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:16:58,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 05:16:58,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:16:58,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 05:16:58,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=2786, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 05:16:58,565 INFO L87 Difference]: Start difference. First operand 184 states and 240 transitions. Second operand has 44 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 39 states have internal predecessors, (109), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-28 05:17:13,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:17:13,368 INFO L93 Difference]: Finished difference Result 341 states and 434 transitions. [2024-11-28 05:17:13,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 05:17:13,369 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 39 states have internal predecessors, (109), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) Word has length 123 [2024-11-28 05:17:13,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:17:13,372 INFO L225 Difference]: With dead ends: 341 [2024-11-28 05:17:13,372 INFO L226 Difference]: Without dead ends: 339 [2024-11-28 05:17:13,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1811 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=1250, Invalid=6582, Unknown=0, NotChecked=0, Total=7832 [2024-11-28 05:17:13,376 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 701 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 3052 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 3199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 3052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:17:13,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 1201 Invalid, 3199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 3052 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2024-11-28 05:17:13,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-11-28 05:17:13,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 211. [2024-11-28 05:17:13,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 183 states have (on average 1.273224043715847) internal successors, (233), 184 states have internal predecessors, (233), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 05:17:13,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 277 transitions. [2024-11-28 05:17:13,406 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 277 transitions. Word has length 123 [2024-11-28 05:17:13,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:17:13,406 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 277 transitions. [2024-11-28 05:17:13,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 36 states have (on average 3.0277777777777777) internal successors, (109), 39 states have internal predecessors, (109), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-28 05:17:13,407 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 277 transitions. [2024-11-28 05:17:13,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 05:17:13,408 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:17:13,408 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:13,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 05:17:13,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:13,612 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:17:13,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:13,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1238954064, now seen corresponding path program 1 times [2024-11-28 05:17:13,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:13,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526480007] [2024-11-28 05:17:13,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:13,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:14,955 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-28 05:17:14,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:14,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526480007] [2024-11-28 05:17:14,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526480007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:14,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918035556] [2024-11-28 05:17:14,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:14,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:14,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:14,960 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:14,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:17:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:15,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 05:17:15,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:15,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:17:16,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:17:16,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:17:17,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:17:17,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:17:17,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:17:18,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2024-11-28 05:17:18,277 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 183 proven. 136 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-28 05:17:18,277 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:18,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918035556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:18,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:17:18,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2024-11-28 05:17:18,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629511273] [2024-11-28 05:17:18,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:17:18,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 05:17:18,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:18,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 05:17:18,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:17:18,571 INFO L87 Difference]: Start difference. First operand 211 states and 277 transitions. Second operand has 15 states, 13 states have (on average 6.769230769230769) internal successors, (88), 15 states have internal predecessors, (88), 8 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 6 states have call predecessors, (32), 8 states have call successors, (32) [2024-11-28 05:17:20,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:17:20,569 INFO L93 Difference]: Finished difference Result 443 states and 577 transitions. [2024-11-28 05:17:20,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:17:20,570 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.769230769230769) internal successors, (88), 15 states have internal predecessors, (88), 8 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 6 states have call predecessors, (32), 8 states have call successors, (32) Word has length 124 [2024-11-28 05:17:20,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:17:20,573 INFO L225 Difference]: With dead ends: 443 [2024-11-28 05:17:20,574 INFO L226 Difference]: Without dead ends: 235 [2024-11-28 05:17:20,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2024-11-28 05:17:20,577 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 114 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:17:20,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 380 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 05:17:20,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-28 05:17:20,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 172. [2024-11-28 05:17:20,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 145 states have (on average 1.2551724137931035) internal successors, (182), 146 states have internal predecessors, (182), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 05:17:20,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 222 transitions. [2024-11-28 05:17:20,608 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 222 transitions. Word has length 124 [2024-11-28 05:17:20,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:17:20,609 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 222 transitions. [2024-11-28 05:17:20,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.769230769230769) internal successors, (88), 15 states have internal predecessors, (88), 8 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 6 states have call predecessors, (32), 8 states have call successors, (32) [2024-11-28 05:17:20,609 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 222 transitions. [2024-11-28 05:17:20,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 05:17:20,611 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:17:20,611 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:20,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:17:20,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 05:17:20,815 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:17:20,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:20,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1094624298, now seen corresponding path program 1 times [2024-11-28 05:17:20,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:20,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899552435] [2024-11-28 05:17:20,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:20,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:21,697 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:17:21,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:21,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899552435] [2024-11-28 05:17:21,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899552435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:17:21,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:17:21,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:17:21,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140353830] [2024-11-28 05:17:21,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:17:21,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:17:21,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:21,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:17:21,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:17:21,699 INFO L87 Difference]: Start difference. First operand 172 states and 222 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 05:17:23,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:17:23,418 INFO L93 Difference]: Finished difference Result 351 states and 449 transitions. [2024-11-28 05:17:23,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:17:23,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 124 [2024-11-28 05:17:23,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:17:23,421 INFO L225 Difference]: With dead ends: 351 [2024-11-28 05:17:23,421 INFO L226 Difference]: Without dead ends: 195 [2024-11-28 05:17:23,421 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:17:23,422 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 161 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:17:23,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 269 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 05:17:23,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-28 05:17:23,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 172. [2024-11-28 05:17:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 145 states have (on average 1.2206896551724138) internal successors, (177), 146 states have internal predecessors, (177), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 05:17:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 217 transitions. [2024-11-28 05:17:23,452 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 217 transitions. Word has length 124 [2024-11-28 05:17:23,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:17:23,453 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 217 transitions. [2024-11-28 05:17:23,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 05:17:23,453 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 217 transitions. [2024-11-28 05:17:23,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 05:17:23,455 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:17:23,455 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:23,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:17:23,455 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:17:23,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:23,455 INFO L85 PathProgramCache]: Analyzing trace with hash -2058585282, now seen corresponding path program 1 times [2024-11-28 05:17:23,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:23,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977468051] [2024-11-28 05:17:23,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:23,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-28 05:17:25,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:25,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977468051] [2024-11-28 05:17:25,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977468051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:25,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104609430] [2024-11-28 05:17:25,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:25,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:25,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:25,075 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:25,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:17:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:25,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 05:17:25,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:26,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:17:27,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:17:27,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:17:28,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:17:29,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:17:29,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:17:30,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:17:30,560 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2024-11-28 05:17:30,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 27 [2024-11-28 05:17:31,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:17:31,280 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2024-11-28 05:17:31,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 38 [2024-11-28 05:17:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 183 proven. 136 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-28 05:17:31,295 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:31,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104609430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:31,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:17:31,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2024-11-28 05:17:31,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579387940] [2024-11-28 05:17:31,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:17:31,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:17:31,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:31,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:17:31,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:17:31,682 INFO L87 Difference]: Start difference. First operand 172 states and 217 transitions. Second operand has 18 states, 16 states have (on average 6.25) internal successors, (100), 18 states have internal predecessors, (100), 9 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 7 states have call predecessors, (32), 9 states have call successors, (32) [2024-11-28 05:17:34,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:17:34,969 INFO L93 Difference]: Finished difference Result 367 states and 461 transitions. [2024-11-28 05:17:34,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:17:34,970 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 6.25) internal successors, (100), 18 states have internal predecessors, (100), 9 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 7 states have call predecessors, (32), 9 states have call successors, (32) Word has length 125 [2024-11-28 05:17:34,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:17:34,972 INFO L225 Difference]: With dead ends: 367 [2024-11-28 05:17:34,972 INFO L226 Difference]: Without dead ends: 211 [2024-11-28 05:17:34,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2024-11-28 05:17:34,976 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 114 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:17:34,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 513 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-28 05:17:34,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-28 05:17:35,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 191. [2024-11-28 05:17:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 164 states have (on average 1.2195121951219512) internal successors, (200), 165 states have internal predecessors, (200), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 05:17:35,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 240 transitions. [2024-11-28 05:17:35,020 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 240 transitions. Word has length 125 [2024-11-28 05:17:35,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:17:35,020 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 240 transitions. [2024-11-28 05:17:35,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 6.25) internal successors, (100), 18 states have internal predecessors, (100), 9 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 7 states have call predecessors, (32), 9 states have call successors, (32) [2024-11-28 05:17:35,021 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 240 transitions. [2024-11-28 05:17:35,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-28 05:17:35,022 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:17:35,023 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:35,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 05:17:35,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 05:17:35,224 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:17:35,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:35,224 INFO L85 PathProgramCache]: Analyzing trace with hash -859819254, now seen corresponding path program 1 times [2024-11-28 05:17:35,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:35,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617032649] [2024-11-28 05:17:35,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:35,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:17:35,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215680495] [2024-11-28 05:17:35,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:35,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:35,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:35,345 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:35,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:17:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:35,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 05:17:35,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:35,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2024-11-28 05:17:36,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:17:36,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:17:37,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:17:38,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:17:38,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:17:39,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:17:39,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:17:40,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:17:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-11-28 05:17:41,104 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:41,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:41,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617032649] [2024-11-28 05:17:41,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:17:41,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215680495] [2024-11-28 05:17:41,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215680495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:41,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:17:41,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2024-11-28 05:17:41,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071250039] [2024-11-28 05:17:41,442 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 05:17:41,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:17:41,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:41,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:17:41,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:17:41,443 INFO L87 Difference]: Start difference. First operand 191 states and 240 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2024-11-28 05:17:42,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:17:42,389 INFO L93 Difference]: Finished difference Result 449 states and 564 transitions. [2024-11-28 05:17:42,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:17:42,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 126 [2024-11-28 05:17:42,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:17:42,392 INFO L225 Difference]: With dead ends: 449 [2024-11-28 05:17:42,392 INFO L226 Difference]: Without dead ends: 261 [2024-11-28 05:17:42,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 151 SyntacticMatches, 7 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:17:42,394 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 34 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:17:42,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 191 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 05:17:42,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-28 05:17:42,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 254. [2024-11-28 05:17:42,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 205 states have (on average 1.1853658536585365) internal successors, (243), 206 states have internal predecessors, (243), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-28 05:17:42,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 315 transitions. [2024-11-28 05:17:42,458 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 315 transitions. Word has length 126 [2024-11-28 05:17:42,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:17:42,459 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 315 transitions. [2024-11-28 05:17:42,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2024-11-28 05:17:42,459 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 315 transitions. [2024-11-28 05:17:42,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-28 05:17:42,460 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:17:42,460 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:42,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 05:17:42,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:42,661 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:17:42,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:42,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1365477640, now seen corresponding path program 1 times [2024-11-28 05:17:42,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:42,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273308267] [2024-11-28 05:17:42,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:42,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:17:42,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560024266] [2024-11-28 05:17:42,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:42,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:42,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:42,792 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:42,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:17:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:43,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-28 05:17:43,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:48,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:17:48,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:17:49,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:17:49,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:17:49,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:17:49,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:17:49,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:17:49,834 INFO L349 Elim1Store]: treesize reduction 69, result has 9.2 percent of original size [2024-11-28 05:17:49,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 43 treesize of output 51 [2024-11-28 05:17:50,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:17:50,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:17:50,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:17:50,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:17:50,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:17:51,278 INFO L349 Elim1Store]: treesize reduction 12, result has 78.9 percent of original size [2024-11-28 05:17:51,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 75 [2024-11-28 05:17:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-11-28 05:17:51,426 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:17:52,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:52,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273308267] [2024-11-28 05:17:52,536 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:17:52,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560024266] [2024-11-28 05:17:52,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560024266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:17:52,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:17:52,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-11-28 05:17:52,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233461455] [2024-11-28 05:17:52,536 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 05:17:52,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:17:52,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:52,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:17:52,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:17:52,537 INFO L87 Difference]: Start difference. First operand 254 states and 315 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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) [2024-11-28 05:17:54,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:17:54,260 INFO L93 Difference]: Finished difference Result 468 states and 579 transitions. [2024-11-28 05:17:54,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:17:54,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 127 [2024-11-28 05:17:54,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:17:54,263 INFO L225 Difference]: With dead ends: 468 [2024-11-28 05:17:54,263 INFO L226 Difference]: Without dead ends: 280 [2024-11-28 05:17:54,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:17:54,264 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 219 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:17:54,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 220 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 05:17:54,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-28 05:17:54,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 265. [2024-11-28 05:17:54,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 216 states have (on average 1.1712962962962963) internal successors, (253), 217 states have internal predecessors, (253), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-28 05:17:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 325 transitions. [2024-11-28 05:17:54,328 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 325 transitions. Word has length 127 [2024-11-28 05:17:54,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:17:54,328 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 325 transitions. [2024-11-28 05:17:54,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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) [2024-11-28 05:17:54,329 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 325 transitions. [2024-11-28 05:17:54,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-28 05:17:54,330 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:17:54,330 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:54,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 05:17:54,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:54,534 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:17:54,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:54,535 INFO L85 PathProgramCache]: Analyzing trace with hash 684455010, now seen corresponding path program 1 times [2024-11-28 05:17:54,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:54,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124770582] [2024-11-28 05:17:54,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:54,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:55,756 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:17:55,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:17:55,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124770582] [2024-11-28 05:17:55,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124770582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:17:55,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:17:55,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:17:55,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602391863] [2024-11-28 05:17:55,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:17:55,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:17:55,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:17:55,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:17:55,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:17:55,758 INFO L87 Difference]: Start difference. First operand 265 states and 325 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:17:57,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:17:57,089 INFO L93 Difference]: Finished difference Result 460 states and 567 transitions. [2024-11-28 05:17:57,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:17:57,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2024-11-28 05:17:57,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:17:57,091 INFO L225 Difference]: With dead ends: 460 [2024-11-28 05:17:57,091 INFO L226 Difference]: Without dead ends: 261 [2024-11-28 05:17:57,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:17:57,092 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 112 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:17:57,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 295 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 05:17:57,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-28 05:17:57,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 259. [2024-11-28 05:17:57,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 210 states have (on average 1.1666666666666667) internal successors, (245), 211 states have internal predecessors, (245), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-28 05:17:57,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 317 transitions. [2024-11-28 05:17:57,143 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 317 transitions. Word has length 127 [2024-11-28 05:17:57,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:17:57,143 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 317 transitions. [2024-11-28 05:17:57,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:17:57,143 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 317 transitions. [2024-11-28 05:17:57,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-28 05:17:57,145 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:17:57,145 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:17:57,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 05:17:57,145 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:17:57,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:57,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1592095487, now seen corresponding path program 1 times [2024-11-28 05:17:57,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:17:57,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375000730] [2024-11-28 05:17:57,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:57,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:17:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:17:57,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280672643] [2024-11-28 05:17:57,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:57,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:57,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:57,223 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:57,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 05:17:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:57,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 05:17:57,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:57,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2024-11-28 05:17:57,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:17:58,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:17:58,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:17:59,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:18:00,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:18:00,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:18:01,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:18:02,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:18:02,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:18:02,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 73 [2024-11-28 05:18:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-11-28 05:18:02,934 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:18:03,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:18:03,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375000730] [2024-11-28 05:18:03,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:18:03,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280672643] [2024-11-28 05:18:03,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280672643] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:18:03,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:18:03,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2024-11-28 05:18:03,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141364151] [2024-11-28 05:18:03,395 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 05:18:03,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:18:03,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:18:03,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:18:03,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:18:03,396 INFO L87 Difference]: Start difference. First operand 259 states and 317 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-11-28 05:18:04,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:18:04,388 INFO L93 Difference]: Finished difference Result 490 states and 600 transitions. [2024-11-28 05:18:04,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:18:04,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 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 128 [2024-11-28 05:18:04,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:18:04,391 INFO L225 Difference]: With dead ends: 490 [2024-11-28 05:18:04,391 INFO L226 Difference]: Without dead ends: 297 [2024-11-28 05:18:04,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 142 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:18:04,393 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 42 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:18:04,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 295 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 05:18:04,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-28 05:18:04,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 271. [2024-11-28 05:18:04,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 222 states have (on average 1.162162162162162) internal successors, (258), 223 states have internal predecessors, (258), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-28 05:18:04,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 330 transitions. [2024-11-28 05:18:04,454 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 330 transitions. Word has length 128 [2024-11-28 05:18:04,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:18:04,454 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 330 transitions. [2024-11-28 05:18:04,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-11-28 05:18:04,454 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 330 transitions. [2024-11-28 05:18:04,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 05:18:04,455 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:18:04,456 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:18:04,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 05:18:04,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:18:04,656 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:18:04,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:18:04,657 INFO L85 PathProgramCache]: Analyzing trace with hash -204876201, now seen corresponding path program 1 times [2024-11-28 05:18:04,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:18:04,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329430617] [2024-11-28 05:18:04,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:18:04,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:18:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:18:08,107 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:18:08,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:18:08,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329430617] [2024-11-28 05:18:08,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329430617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:18:08,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:18:08,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 05:18:08,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137058372] [2024-11-28 05:18:08,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:18:08,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:18:08,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:18:08,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:18:08,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:18:08,110 INFO L87 Difference]: Start difference. First operand 271 states and 330 transitions. Second operand has 12 states, 10 states have (on average 5.2) internal successors, (52), 12 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 05:18:11,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:18:11,849 INFO L93 Difference]: Finished difference Result 576 states and 711 transitions. [2024-11-28 05:18:11,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:18:11,850 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.2) internal successors, (52), 12 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2024-11-28 05:18:11,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:18:11,852 INFO L225 Difference]: With dead ends: 576 [2024-11-28 05:18:11,853 INFO L226 Difference]: Without dead ends: 383 [2024-11-28 05:18:11,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:18:11,857 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 304 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:18:11,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 444 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 05:18:11,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-28 05:18:11,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 380. [2024-11-28 05:18:11,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 316 states have (on average 1.1898734177215189) internal successors, (376), 318 states have internal predecessors, (376), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-28 05:18:11,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 468 transitions. [2024-11-28 05:18:11,938 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 468 transitions. Word has length 129 [2024-11-28 05:18:11,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:18:11,938 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 468 transitions. [2024-11-28 05:18:11,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.2) internal successors, (52), 12 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 05:18:11,938 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 468 transitions. [2024-11-28 05:18:11,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 05:18:11,939 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:18:11,939 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:18:11,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 05:18:11,939 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:18:11,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:18:11,940 INFO L85 PathProgramCache]: Analyzing trace with hash -597903211, now seen corresponding path program 1 times [2024-11-28 05:18:11,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:18:11,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177162804] [2024-11-28 05:18:11,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:18:11,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:18:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:18:14,921 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:18:14,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:18:14,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177162804] [2024-11-28 05:18:14,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177162804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:18:14,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:18:14,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 05:18:14,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39535534] [2024-11-28 05:18:14,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:18:14,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:18:14,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:18:14,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:18:14,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:18:14,923 INFO L87 Difference]: Start difference. First operand 380 states and 468 transitions. Second operand has 11 states, 9 states have (on average 5.777777777777778) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 05:18:18,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:18:18,079 INFO L93 Difference]: Finished difference Result 677 states and 838 transitions. [2024-11-28 05:18:18,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:18:18,080 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.777777777777778) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2024-11-28 05:18:18,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:18:18,083 INFO L225 Difference]: With dead ends: 677 [2024-11-28 05:18:18,083 INFO L226 Difference]: Without dead ends: 379 [2024-11-28 05:18:18,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:18:18,085 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 246 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:18:18,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 422 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 05:18:18,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-28 05:18:18,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 376. [2024-11-28 05:18:18,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 312 states have (on average 1.1794871794871795) internal successors, (368), 314 states have internal predecessors, (368), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-28 05:18:18,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 460 transitions. [2024-11-28 05:18:18,212 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 460 transitions. Word has length 129 [2024-11-28 05:18:18,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:18:18,212 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 460 transitions. [2024-11-28 05:18:18,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.777777777777778) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 05:18:18,213 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 460 transitions. [2024-11-28 05:18:18,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 05:18:18,214 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:18:18,214 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:18:18,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 05:18:18,214 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:18:18,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:18:18,215 INFO L85 PathProgramCache]: Analyzing trace with hash -463041639, now seen corresponding path program 1 times [2024-11-28 05:18:18,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:18:18,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480968336] [2024-11-28 05:18:18,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:18:18,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:18:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:18:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:18:21,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:18:21,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480968336] [2024-11-28 05:18:21,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480968336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:18:21,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:18:21,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 05:18:21,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471451177] [2024-11-28 05:18:21,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:18:21,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 05:18:21,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:18:21,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 05:18:21,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:18:21,838 INFO L87 Difference]: Start difference. First operand 376 states and 460 transitions. Second operand has 14 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 14 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-28 05:18:26,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:18:26,033 INFO L93 Difference]: Finished difference Result 729 states and 899 transitions. [2024-11-28 05:18:26,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:18:26,034 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 14 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 5 states have call successors, (16) Word has length 129 [2024-11-28 05:18:26,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:18:26,036 INFO L225 Difference]: With dead ends: 729 [2024-11-28 05:18:26,036 INFO L226 Difference]: Without dead ends: 435 [2024-11-28 05:18:26,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:18:26,038 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 257 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:18:26,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 523 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 05:18:26,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2024-11-28 05:18:26,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 402. [2024-11-28 05:18:26,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 338 states have (on average 1.1775147928994083) internal successors, (398), 340 states have internal predecessors, (398), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-28 05:18:26,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 490 transitions. [2024-11-28 05:18:26,161 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 490 transitions. Word has length 129 [2024-11-28 05:18:26,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:18:26,161 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 490 transitions. [2024-11-28 05:18:26,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 14 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-28 05:18:26,161 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 490 transitions. [2024-11-28 05:18:26,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 05:18:26,162 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:18:26,162 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:18:26,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 05:18:26,162 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:18:26,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:18:26,163 INFO L85 PathProgramCache]: Analyzing trace with hash -311577214, now seen corresponding path program 1 times [2024-11-28 05:18:26,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:18:26,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244520126] [2024-11-28 05:18:26,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:18:26,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:18:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:18:32,011 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:18:32,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:18:32,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244520126] [2024-11-28 05:18:32,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244520126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:18:32,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:18:32,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-28 05:18:32,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800433535] [2024-11-28 05:18:32,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:18:32,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 05:18:32,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:18:32,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 05:18:32,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2024-11-28 05:18:32,013 INFO L87 Difference]: Start difference. First operand 402 states and 490 transitions. Second operand has 23 states, 20 states have (on average 2.6) internal successors, (52), 23 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-28 05:18:41,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:18:41,140 INFO L93 Difference]: Finished difference Result 870 states and 1073 transitions. [2024-11-28 05:18:41,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 05:18:41,140 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.6) internal successors, (52), 23 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 5 states have call successors, (16) Word has length 129 [2024-11-28 05:18:41,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:18:41,143 INFO L225 Difference]: With dead ends: 870 [2024-11-28 05:18:41,143 INFO L226 Difference]: Without dead ends: 550 [2024-11-28 05:18:41,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=186, Invalid=1454, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 05:18:41,145 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 281 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 1980 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:18:41,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 970 Invalid, 2003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1980 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-28 05:18:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-28 05:18:41,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 480. [2024-11-28 05:18:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 416 states have (on average 1.1826923076923077) internal successors, (492), 418 states have internal predecessors, (492), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-28 05:18:41,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 584 transitions. [2024-11-28 05:18:41,273 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 584 transitions. Word has length 129 [2024-11-28 05:18:41,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:18:41,274 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 584 transitions. [2024-11-28 05:18:41,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.6) internal successors, (52), 23 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-28 05:18:41,274 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 584 transitions. [2024-11-28 05:18:41,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 05:18:41,275 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:18:41,275 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:18:41,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 05:18:41,276 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:18:41,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:18:41,276 INFO L85 PathProgramCache]: Analyzing trace with hash -704604224, now seen corresponding path program 1 times [2024-11-28 05:18:41,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:18:41,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449310001] [2024-11-28 05:18:41,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:18:41,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:18:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:18:41,637 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:18:41,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:18:41,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449310001] [2024-11-28 05:18:41,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449310001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:18:41,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:18:41,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:18:41,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224134038] [2024-11-28 05:18:41,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:18:41,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:18:41,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:18:41,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:18:41,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:18:41,640 INFO L87 Difference]: Start difference. First operand 480 states and 584 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:18:42,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:18:42,553 INFO L93 Difference]: Finished difference Result 917 states and 1125 transitions. [2024-11-28 05:18:42,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:18:42,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2024-11-28 05:18:42,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:18:42,556 INFO L225 Difference]: With dead ends: 917 [2024-11-28 05:18:42,556 INFO L226 Difference]: Without dead ends: 519 [2024-11-28 05:18:42,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:18:42,557 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 31 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:18:42,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 375 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:18:42,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2024-11-28 05:18:42,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 484. [2024-11-28 05:18:42,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 420 states have (on average 1.1714285714285715) internal successors, (492), 422 states have internal predecessors, (492), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-28 05:18:42,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 584 transitions. [2024-11-28 05:18:42,677 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 584 transitions. Word has length 129 [2024-11-28 05:18:42,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:18:42,677 INFO L471 AbstractCegarLoop]: Abstraction has 484 states and 584 transitions. [2024-11-28 05:18:42,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:18:42,677 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 584 transitions. [2024-11-28 05:18:42,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 05:18:42,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:18:42,678 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:18:42,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 05:18:42,678 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:18:42,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:18:42,679 INFO L85 PathProgramCache]: Analyzing trace with hash -445590720, now seen corresponding path program 1 times [2024-11-28 05:18:42,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:18:42,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096435863] [2024-11-28 05:18:42,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:18:42,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:18:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:18:43,347 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:18:43,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:18:43,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096435863] [2024-11-28 05:18:43,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096435863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:18:43,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:18:43,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:18:43,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510906902] [2024-11-28 05:18:43,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:18:43,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:18:43,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:18:43,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:18:43,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:18:43,351 INFO L87 Difference]: Start difference. First operand 484 states and 584 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 05:18:44,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:18:44,795 INFO L93 Difference]: Finished difference Result 859 states and 1043 transitions. [2024-11-28 05:18:44,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:18:44,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-28 05:18:44,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:18:44,798 INFO L225 Difference]: With dead ends: 859 [2024-11-28 05:18:44,798 INFO L226 Difference]: Without dead ends: 457 [2024-11-28 05:18:44,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:18:44,800 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 104 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:18:44,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 273 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 05:18:44,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2024-11-28 05:18:44,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2024-11-28 05:18:44,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 393 states have (on average 1.1704834605597965) internal successors, (460), 395 states have internal predecessors, (460), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-28 05:18:44,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 552 transitions. [2024-11-28 05:18:44,924 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 552 transitions. Word has length 129 [2024-11-28 05:18:44,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:18:44,925 INFO L471 AbstractCegarLoop]: Abstraction has 457 states and 552 transitions. [2024-11-28 05:18:44,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 05:18:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 552 transitions. [2024-11-28 05:18:44,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 05:18:44,926 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:18:44,926 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:18:44,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 05:18:44,926 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:18:44,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:18:44,927 INFO L85 PathProgramCache]: Analyzing trace with hash -957911696, now seen corresponding path program 1 times [2024-11-28 05:18:44,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:18:44,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191911405] [2024-11-28 05:18:44,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:18:44,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:18:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:18:49,764 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:18:49,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:18:49,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191911405] [2024-11-28 05:18:49,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191911405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:18:49,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:18:49,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-28 05:18:49,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573064610] [2024-11-28 05:18:49,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:18:49,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 05:18:49,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:18:49,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 05:18:49,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2024-11-28 05:18:49,766 INFO L87 Difference]: Start difference. First operand 457 states and 552 transitions. Second operand has 23 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 23 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-28 05:18:58,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:18:58,869 INFO L93 Difference]: Finished difference Result 982 states and 1199 transitions. [2024-11-28 05:18:58,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 05:18:58,871 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 23 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 5 states have call successors, (16) Word has length 129 [2024-11-28 05:18:58,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:18:58,874 INFO L225 Difference]: With dead ends: 982 [2024-11-28 05:18:58,874 INFO L226 Difference]: Without dead ends: 607 [2024-11-28 05:18:58,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=211, Invalid=1429, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 05:18:58,876 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 233 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 1795 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:18:58,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1024 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1795 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-28 05:18:58,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2024-11-28 05:18:59,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 521. [2024-11-28 05:18:59,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 457 states have (on average 1.1903719912472648) internal successors, (544), 459 states have internal predecessors, (544), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-28 05:18:59,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 636 transitions. [2024-11-28 05:18:59,018 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 636 transitions. Word has length 129 [2024-11-28 05:18:59,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:18:59,018 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 636 transitions. [2024-11-28 05:18:59,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 23 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-28 05:18:59,019 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 636 transitions. [2024-11-28 05:18:59,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 05:18:59,021 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:18:59,021 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:18:59,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 05:18:59,022 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:18:59,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:18:59,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1350938706, now seen corresponding path program 1 times [2024-11-28 05:18:59,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:18:59,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15328142] [2024-11-28 05:18:59,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:18:59,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:18:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:00,598 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:19:00,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:00,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15328142] [2024-11-28 05:19:00,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15328142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:00,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:00,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 05:19:00,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435920337] [2024-11-28 05:19:00,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:00,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:19:00,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:00,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:19:00,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:19:00,601 INFO L87 Difference]: Start difference. First operand 521 states and 636 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 05:19:03,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:19:03,556 INFO L93 Difference]: Finished difference Result 1051 states and 1286 transitions. [2024-11-28 05:19:03,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:19:03,557 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-28 05:19:03,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:19:03,560 INFO L225 Difference]: With dead ends: 1051 [2024-11-28 05:19:03,560 INFO L226 Difference]: Without dead ends: 612 [2024-11-28 05:19:03,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:19:03,562 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 277 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:19:03,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 375 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 05:19:03,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2024-11-28 05:19:03,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 609. [2024-11-28 05:19:03,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 528 states have (on average 1.1704545454545454) internal successors, (618), 531 states have internal predecessors, (618), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-28 05:19:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 734 transitions. [2024-11-28 05:19:03,751 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 734 transitions. Word has length 129 [2024-11-28 05:19:03,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:19:03,751 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 734 transitions. [2024-11-28 05:19:03,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 05:19:03,752 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 734 transitions. [2024-11-28 05:19:03,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 05:19:03,753 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:19:03,754 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:19:03,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 05:19:03,754 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:19:03,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:03,754 INFO L85 PathProgramCache]: Analyzing trace with hash -806447271, now seen corresponding path program 1 times [2024-11-28 05:19:03,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:03,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690158061] [2024-11-28 05:19:03,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:03,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:06,712 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:19:06,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:06,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690158061] [2024-11-28 05:19:06,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690158061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:06,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:06,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 05:19:06,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706678228] [2024-11-28 05:19:06,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:06,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 05:19:06,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:06,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 05:19:06,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:19:06,714 INFO L87 Difference]: Start difference. First operand 609 states and 734 transitions. Second operand has 13 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 13 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 05:19:11,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:19:11,254 INFO L93 Difference]: Finished difference Result 1185 states and 1433 transitions. [2024-11-28 05:19:11,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:19:11,255 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 13 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2024-11-28 05:19:11,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:19:11,258 INFO L225 Difference]: With dead ends: 1185 [2024-11-28 05:19:11,258 INFO L226 Difference]: Without dead ends: 662 [2024-11-28 05:19:11,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:19:11,262 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 217 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:19:11,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 585 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 05:19:11,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-11-28 05:19:11,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 605. [2024-11-28 05:19:11,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 524 states have (on average 1.1641221374045803) internal successors, (610), 527 states have internal predecessors, (610), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-28 05:19:11,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 726 transitions. [2024-11-28 05:19:11,433 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 726 transitions. Word has length 129 [2024-11-28 05:19:11,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:19:11,433 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 726 transitions. [2024-11-28 05:19:11,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 13 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 05:19:11,434 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 726 transitions. [2024-11-28 05:19:11,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 05:19:11,435 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:19:11,436 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:19:11,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 05:19:11,436 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:19:11,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:11,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1091925202, now seen corresponding path program 1 times [2024-11-28 05:19:11,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:11,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983408540] [2024-11-28 05:19:11,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:11,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:12,184 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:19:12,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:12,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983408540] [2024-11-28 05:19:12,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983408540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:12,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:12,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:19:12,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258002669] [2024-11-28 05:19:12,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:12,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:19:12,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:12,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:19:12,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:19:12,187 INFO L87 Difference]: Start difference. First operand 605 states and 726 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 05:19:13,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:19:13,718 INFO L93 Difference]: Finished difference Result 1085 states and 1310 transitions. [2024-11-28 05:19:13,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:19:13,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-28 05:19:13,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:19:13,724 INFO L225 Difference]: With dead ends: 1085 [2024-11-28 05:19:13,725 INFO L226 Difference]: Without dead ends: 566 [2024-11-28 05:19:13,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:19:13,726 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 102 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:19:13,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 273 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 05:19:13,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-28 05:19:13,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-28 05:19:13,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 485 states have (on average 1.1628865979381444) internal successors, (564), 488 states have internal predecessors, (564), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-28 05:19:13,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 680 transitions. [2024-11-28 05:19:13,893 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 680 transitions. Word has length 129 [2024-11-28 05:19:13,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:19:13,893 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 680 transitions. [2024-11-28 05:19:13,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 05:19:13,893 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 680 transitions. [2024-11-28 05:19:13,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 05:19:13,895 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:19:13,895 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:19:13,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 05:19:13,895 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:19:13,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:13,895 INFO L85 PathProgramCache]: Analyzing trace with hash -142836587, now seen corresponding path program 1 times [2024-11-28 05:19:13,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:13,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276853976] [2024-11-28 05:19:13,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:13,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:19:15,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:15,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276853976] [2024-11-28 05:19:15,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276853976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:15,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:15,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 05:19:15,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820023475] [2024-11-28 05:19:15,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:15,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:19:15,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:15,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:19:15,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:19:15,717 INFO L87 Difference]: Start difference. First operand 566 states and 680 transitions. Second operand has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 05:19:18,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:19:18,029 INFO L93 Difference]: Finished difference Result 1015 states and 1224 transitions. [2024-11-28 05:19:18,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:19:18,029 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2024-11-28 05:19:18,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:19:18,031 INFO L225 Difference]: With dead ends: 1015 [2024-11-28 05:19:18,031 INFO L226 Difference]: Without dead ends: 535 [2024-11-28 05:19:18,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:19:18,033 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 178 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:19:18,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 335 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 05:19:18,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-28 05:19:18,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2024-11-28 05:19:18,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 454 states have (on average 1.1541850220264318) internal successors, (524), 457 states have internal predecessors, (524), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-28 05:19:18,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 640 transitions. [2024-11-28 05:19:18,207 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 640 transitions. Word has length 129 [2024-11-28 05:19:18,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:19:18,208 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 640 transitions. [2024-11-28 05:19:18,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 05:19:18,208 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 640 transitions. [2024-11-28 05:19:18,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 05:19:18,209 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:19:18,209 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:19:18,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 05:19:18,210 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:19:18,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:18,210 INFO L85 PathProgramCache]: Analyzing trace with hash -276850093, now seen corresponding path program 1 times [2024-11-28 05:19:18,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:18,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736422413] [2024-11-28 05:19:18,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:18,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:19:18,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:18,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736422413] [2024-11-28 05:19:18,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736422413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:18,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:18,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:19:18,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664294573] [2024-11-28 05:19:18,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:18,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:19:18,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:18,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:19:18,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:19:18,570 INFO L87 Difference]: Start difference. First operand 535 states and 640 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:19:19,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:19:19,565 INFO L93 Difference]: Finished difference Result 976 states and 1174 transitions. [2024-11-28 05:19:19,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:19:19,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2024-11-28 05:19:19,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:19:19,567 INFO L225 Difference]: With dead ends: 976 [2024-11-28 05:19:19,568 INFO L226 Difference]: Without dead ends: 527 [2024-11-28 05:19:19,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:19:19,569 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 33 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:19:19,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 400 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 05:19:19,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-11-28 05:19:19,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 521. [2024-11-28 05:19:19,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 440 states have (on average 1.1454545454545455) internal successors, (504), 443 states have internal predecessors, (504), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-28 05:19:19,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 620 transitions. [2024-11-28 05:19:19,675 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 620 transitions. Word has length 129 [2024-11-28 05:19:19,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:19:19,675 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 620 transitions. [2024-11-28 05:19:19,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:19:19,676 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 620 transitions. [2024-11-28 05:19:19,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 05:19:19,677 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:19:19,677 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:19:19,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 05:19:19,678 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:19:19,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:19,678 INFO L85 PathProgramCache]: Analyzing trace with hash -669877103, now seen corresponding path program 1 times [2024-11-28 05:19:19,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:19,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479737565] [2024-11-28 05:19:19,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:19,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:23,009 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:19:23,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:23,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479737565] [2024-11-28 05:19:23,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479737565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:23,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:23,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 05:19:23,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467912981] [2024-11-28 05:19:23,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:23,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 05:19:23,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:23,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 05:19:23,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:19:23,013 INFO L87 Difference]: Start difference. First operand 521 states and 620 transitions. Second operand has 14 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 14 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-28 05:19:27,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:19:27,209 INFO L93 Difference]: Finished difference Result 1108 states and 1330 transitions. [2024-11-28 05:19:27,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:19:27,210 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 14 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 5 states have call successors, (16) Word has length 129 [2024-11-28 05:19:27,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:19:27,212 INFO L225 Difference]: With dead ends: 1108 [2024-11-28 05:19:27,212 INFO L226 Difference]: Without dead ends: 673 [2024-11-28 05:19:27,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:19:27,214 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 269 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:19:27,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 564 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 05:19:27,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2024-11-28 05:19:27,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 547. [2024-11-28 05:19:27,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 466 states have (on average 1.150214592274678) internal successors, (536), 469 states have internal predecessors, (536), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-28 05:19:27,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 652 transitions. [2024-11-28 05:19:27,409 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 652 transitions. Word has length 129 [2024-11-28 05:19:27,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:19:27,410 INFO L471 AbstractCegarLoop]: Abstraction has 547 states and 652 transitions. [2024-11-28 05:19:27,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 14 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-28 05:19:27,411 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 652 transitions. [2024-11-28 05:19:27,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 05:19:27,413 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:19:27,413 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:19:27,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 05:19:27,415 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:19:27,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:27,416 INFO L85 PathProgramCache]: Analyzing trace with hash -125385668, now seen corresponding path program 1 times [2024-11-28 05:19:27,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:27,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467301105] [2024-11-28 05:19:27,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:27,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:19:27,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:27,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467301105] [2024-11-28 05:19:27,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467301105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:27,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:27,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:19:27,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980161315] [2024-11-28 05:19:27,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:27,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:19:27,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:27,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:19:27,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:19:27,775 INFO L87 Difference]: Start difference. First operand 547 states and 652 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:19:28,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:19:28,544 INFO L93 Difference]: Finished difference Result 1010 states and 1208 transitions. [2024-11-28 05:19:28,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:19:28,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2024-11-28 05:19:28,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:19:28,548 INFO L225 Difference]: With dead ends: 1010 [2024-11-28 05:19:28,548 INFO L226 Difference]: Without dead ends: 549 [2024-11-28 05:19:28,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:19:28,549 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 32 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:19:28,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 400 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:19:28,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-28 05:19:28,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 547. [2024-11-28 05:19:28,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 466 states have (on average 1.145922746781116) internal successors, (534), 469 states have internal predecessors, (534), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-28 05:19:28,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 650 transitions. [2024-11-28 05:19:28,734 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 650 transitions. Word has length 129 [2024-11-28 05:19:28,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:19:28,735 INFO L471 AbstractCegarLoop]: Abstraction has 547 states and 650 transitions. [2024-11-28 05:19:28,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:19:28,735 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 650 transitions. [2024-11-28 05:19:28,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 05:19:28,736 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:19:28,737 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:19:28,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 05:19:28,737 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:19:28,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:28,737 INFO L85 PathProgramCache]: Analyzing trace with hash -518412678, now seen corresponding path program 1 times [2024-11-28 05:19:28,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:28,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212286933] [2024-11-28 05:19:28,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:28,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:19:34,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:34,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212286933] [2024-11-28 05:19:34,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212286933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:34,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:34,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-28 05:19:34,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339000060] [2024-11-28 05:19:34,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:34,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 05:19:34,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:34,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 05:19:34,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-11-28 05:19:34,284 INFO L87 Difference]: Start difference. First operand 547 states and 650 transitions. Second operand has 23 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 23 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-28 05:19:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:19:43,844 INFO L93 Difference]: Finished difference Result 1078 states and 1288 transitions. [2024-11-28 05:19:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 05:19:43,845 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 23 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 5 states have call successors, (16) Word has length 129 [2024-11-28 05:19:43,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:19:43,847 INFO L225 Difference]: With dead ends: 1078 [2024-11-28 05:19:43,847 INFO L226 Difference]: Without dead ends: 617 [2024-11-28 05:19:43,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=210, Invalid=1430, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 05:19:43,848 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 232 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:19:43,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1085 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-28 05:19:43,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-11-28 05:19:44,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 559. [2024-11-28 05:19:44,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 478 states have (on average 1.1422594142259415) internal successors, (546), 481 states have internal predecessors, (546), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (58), 55 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-28 05:19:44,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 662 transitions. [2024-11-28 05:19:44,023 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 662 transitions. Word has length 129 [2024-11-28 05:19:44,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:19:44,023 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 662 transitions. [2024-11-28 05:19:44,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 23 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-28 05:19:44,024 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 662 transitions. [2024-11-28 05:19:44,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 05:19:44,025 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:19:44,025 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:19:44,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 05:19:44,025 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:19:44,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:44,026 INFO L85 PathProgramCache]: Analyzing trace with hash -535015531, now seen corresponding path program 1 times [2024-11-28 05:19:44,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:44,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367546972] [2024-11-28 05:19:44,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:44,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:46,560 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:19:46,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:46,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367546972] [2024-11-28 05:19:46,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367546972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:46,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:46,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 05:19:46,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178042058] [2024-11-28 05:19:46,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:46,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:19:46,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:46,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:19:46,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:19:46,562 INFO L87 Difference]: Start difference. First operand 559 states and 662 transitions. Second operand has 11 states, 9 states have (on average 5.777777777777778) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 05:19:49,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:19:49,585 INFO L93 Difference]: Finished difference Result 981 states and 1159 transitions. [2024-11-28 05:19:49,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:19:49,586 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.777777777777778) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2024-11-28 05:19:49,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:19:49,588 INFO L225 Difference]: With dead ends: 981 [2024-11-28 05:19:49,588 INFO L226 Difference]: Without dead ends: 508 [2024-11-28 05:19:49,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:19:49,589 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 335 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:19:49,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 394 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-28 05:19:49,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2024-11-28 05:19:49,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 480. [2024-11-28 05:19:49,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 402 states have (on average 1.1169154228855722) internal successors, (449), 404 states have internal predecessors, (449), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:19:49,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 557 transitions. [2024-11-28 05:19:49,701 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 557 transitions. Word has length 129 [2024-11-28 05:19:49,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:19:49,701 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 557 transitions. [2024-11-28 05:19:49,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.777777777777778) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 05:19:49,701 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 557 transitions. [2024-11-28 05:19:49,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 05:19:49,702 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:19:49,702 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:19:49,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 05:19:49,702 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:19:49,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:49,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1030733654, now seen corresponding path program 1 times [2024-11-28 05:19:49,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:49,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116614456] [2024-11-28 05:19:49,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:49,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:19:49,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:49,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116614456] [2024-11-28 05:19:49,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116614456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:49,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:49,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:19:49,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556937263] [2024-11-28 05:19:49,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:49,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:19:49,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:49,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:19:49,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:19:49,981 INFO L87 Difference]: Start difference. First operand 480 states and 557 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:19:50,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:19:50,619 INFO L93 Difference]: Finished difference Result 874 states and 1017 transitions. [2024-11-28 05:19:50,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:19:50,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2024-11-28 05:19:50,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:19:50,621 INFO L225 Difference]: With dead ends: 874 [2024-11-28 05:19:50,621 INFO L226 Difference]: Without dead ends: 480 [2024-11-28 05:19:50,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:19:50,622 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 9 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:19:50,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 367 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:19:50,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2024-11-28 05:19:50,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2024-11-28 05:19:50,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 402 states have (on average 1.1144278606965174) internal successors, (448), 404 states have internal predecessors, (448), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:19:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 556 transitions. [2024-11-28 05:19:50,737 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 556 transitions. Word has length 129 [2024-11-28 05:19:50,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:19:50,737 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 556 transitions. [2024-11-28 05:19:50,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:19:50,737 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 556 transitions. [2024-11-28 05:19:50,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 05:19:50,738 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:19:50,738 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:19:50,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 05:19:50,738 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:19:50,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:19:50,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1164747160, now seen corresponding path program 1 times [2024-11-28 05:19:50,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:19:50,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958948043] [2024-11-28 05:19:50,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:19:50,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:19:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:19:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:19:55,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:55,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958948043] [2024-11-28 05:19:55,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958948043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:19:55,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:19:55,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-28 05:19:55,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103714281] [2024-11-28 05:19:55,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:19:55,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 05:19:55,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:55,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 05:19:55,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2024-11-28 05:19:55,403 INFO L87 Difference]: Start difference. First operand 480 states and 556 transitions. Second operand has 23 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 23 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-28 05:20:04,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:04,469 INFO L93 Difference]: Finished difference Result 903 states and 1050 transitions. [2024-11-28 05:20:04,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 05:20:04,470 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 23 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 5 states have call successors, (16) Word has length 129 [2024-11-28 05:20:04,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:04,473 INFO L225 Difference]: With dead ends: 903 [2024-11-28 05:20:04,473 INFO L226 Difference]: Without dead ends: 509 [2024-11-28 05:20:04,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=211, Invalid=1429, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 05:20:04,475 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 265 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 1818 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:04,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 1052 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1818 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-28 05:20:04,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2024-11-28 05:20:04,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 480. [2024-11-28 05:20:04,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 402 states have (on average 1.1144278606965174) internal successors, (448), 404 states have internal predecessors, (448), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:20:04,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 556 transitions. [2024-11-28 05:20:04,663 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 556 transitions. Word has length 129 [2024-11-28 05:20:04,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:04,664 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 556 transitions. [2024-11-28 05:20:04,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 23 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-28 05:20:04,664 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 556 transitions. [2024-11-28 05:20:04,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 05:20:04,666 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:04,666 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:04,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-28 05:20:04,666 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:04,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:04,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1013282735, now seen corresponding path program 1 times [2024-11-28 05:20:04,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:04,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80897094] [2024-11-28 05:20:04,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:04,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:20:10,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:10,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80897094] [2024-11-28 05:20:10,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80897094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:20:10,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:20:10,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 05:20:10,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30536310] [2024-11-28 05:20:10,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:20:10,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 05:20:10,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:10,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 05:20:10,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:20:10,461 INFO L87 Difference]: Start difference. First operand 480 states and 556 transitions. Second operand has 17 states, 13 states have (on average 4.0) internal successors, (52), 17 states have internal predecessors, (52), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-28 05:20:17,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:17,826 INFO L93 Difference]: Finished difference Result 921 states and 1069 transitions. [2024-11-28 05:20:17,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 05:20:17,827 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 4.0) internal successors, (52), 17 states have internal predecessors, (52), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 6 states have call successors, (16) Word has length 129 [2024-11-28 05:20:17,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:17,829 INFO L225 Difference]: With dead ends: 921 [2024-11-28 05:20:17,829 INFO L226 Difference]: Without dead ends: 525 [2024-11-28 05:20:17,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2024-11-28 05:20:17,831 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 184 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:17,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 797 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1487 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-28 05:20:17,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-28 05:20:17,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 468. [2024-11-28 05:20:17,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 390 states have (on average 1.1076923076923078) internal successors, (432), 392 states have internal predecessors, (432), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:20:17,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 540 transitions. [2024-11-28 05:20:17,982 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 540 transitions. Word has length 129 [2024-11-28 05:20:17,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:17,982 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 540 transitions. [2024-11-28 05:20:17,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 4.0) internal successors, (52), 17 states have internal predecessors, (52), 6 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-28 05:20:17,983 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 540 transitions. [2024-11-28 05:20:17,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-28 05:20:17,984 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:17,984 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:17,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-28 05:20:17,984 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:17,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:17,984 INFO L85 PathProgramCache]: Analyzing trace with hash 962076101, now seen corresponding path program 1 times [2024-11-28 05:20:17,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:17,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571349530] [2024-11-28 05:20:17,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:17,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:22,775 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 108 proven. 36 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-28 05:20:22,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:22,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571349530] [2024-11-28 05:20:22,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571349530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:22,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975871295] [2024-11-28 05:20:22,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:22,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:22,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:22,778 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:20:22,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 05:20:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:23,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-28 05:20:23,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:20:26,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:20:28,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:20:29,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:20:30,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:20:31,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:20:35,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-11-28 05:20:35,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:20:35,837 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 05:20:35,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2024-11-28 05:20:37,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:20:37,396 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-28 05:20:37,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 34 [2024-11-28 05:20:37,938 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 252 proven. 96 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-28 05:20:37,938 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:20:40,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975871295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:40,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:20:40,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 27] total 44 [2024-11-28 05:20:40,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190543102] [2024-11-28 05:20:40,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:20:40,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 05:20:40,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:40,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 05:20:40,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2330, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 05:20:40,283 INFO L87 Difference]: Start difference. First operand 468 states and 540 transitions. Second operand has 44 states, 36 states have (on average 3.5277777777777777) internal successors, (127), 39 states have internal predecessors, (127), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-28 05:20:53,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:53,394 INFO L93 Difference]: Finished difference Result 663 states and 761 transitions. [2024-11-28 05:20:53,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-28 05:20:53,395 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 36 states have (on average 3.5277777777777777) internal successors, (127), 39 states have internal predecessors, (127), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) Word has length 132 [2024-11-28 05:20:53,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:53,397 INFO L225 Difference]: With dead ends: 663 [2024-11-28 05:20:53,397 INFO L226 Difference]: Without dead ends: 661 [2024-11-28 05:20:53,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1300 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=769, Invalid=4931, Unknown=0, NotChecked=0, Total=5700 [2024-11-28 05:20:53,398 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 308 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 2792 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:53,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 1214 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2792 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2024-11-28 05:20:53,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2024-11-28 05:20:53,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 522. [2024-11-28 05:20:53,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 444 states have (on average 1.0990990990990992) internal successors, (488), 446 states have internal predecessors, (488), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:20:53,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 596 transitions. [2024-11-28 05:20:53,529 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 596 transitions. Word has length 132 [2024-11-28 05:20:53,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:53,529 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 596 transitions. [2024-11-28 05:20:53,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 36 states have (on average 3.5277777777777777) internal successors, (127), 39 states have internal predecessors, (127), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 10 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-28 05:20:53,529 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 596 transitions. [2024-11-28 05:20:53,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-28 05:20:53,531 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:53,531 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:53,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 05:20:53,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:53,731 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:53,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:53,732 INFO L85 PathProgramCache]: Analyzing trace with hash 809370922, now seen corresponding path program 1 times [2024-11-28 05:20:53,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:53,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121277460] [2024-11-28 05:20:53,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:53,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:54,970 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-28 05:20:54,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:54,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121277460] [2024-11-28 05:20:54,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121277460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:54,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709233081] [2024-11-28 05:20:54,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:54,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:54,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:54,972 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:20:54,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 05:20:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:55,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 05:20:55,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:20:56,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:20:57,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:20:57,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:20:58,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:20:59,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:20:59,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:21:00,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:00,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:21:00,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2024-11-28 05:21:00,625 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 183 proven. 136 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-28 05:21:00,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:21:00,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709233081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:21:00,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:21:00,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2024-11-28 05:21:00,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548690526] [2024-11-28 05:21:00,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:21:00,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:21:00,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:00,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:21:00,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:21:00,962 INFO L87 Difference]: Start difference. First operand 522 states and 596 transitions. Second operand has 18 states, 16 states have (on average 6.4375) internal successors, (103), 18 states have internal predecessors, (103), 9 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 7 states have call predecessors, (32), 9 states have call successors, (32) [2024-11-28 05:21:03,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:03,299 INFO L93 Difference]: Finished difference Result 974 states and 1111 transitions. [2024-11-28 05:21:03,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:21:03,300 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 6.4375) internal successors, (103), 18 states have internal predecessors, (103), 9 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 7 states have call predecessors, (32), 9 states have call successors, (32) Word has length 134 [2024-11-28 05:21:03,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:03,302 INFO L225 Difference]: With dead ends: 974 [2024-11-28 05:21:03,302 INFO L226 Difference]: Without dead ends: 538 [2024-11-28 05:21:03,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2024-11-28 05:21:03,303 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 140 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:21:03,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 357 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 05:21:03,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-28 05:21:03,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 522. [2024-11-28 05:21:03,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 444 states have (on average 1.09009009009009) internal successors, (484), 446 states have internal predecessors, (484), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:21:03,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 592 transitions. [2024-11-28 05:21:03,484 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 592 transitions. Word has length 134 [2024-11-28 05:21:03,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:03,484 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 592 transitions. [2024-11-28 05:21:03,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 6.4375) internal successors, (103), 18 states have internal predecessors, (103), 9 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 7 states have call predecessors, (32), 9 states have call successors, (32) [2024-11-28 05:21:03,485 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 592 transitions. [2024-11-28 05:21:03,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-28 05:21:03,486 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:03,486 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:03,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 05:21:03,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:03,686 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:21:03,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:03,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1557543110, now seen corresponding path program 1 times [2024-11-28 05:21:03,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:03,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747373846] [2024-11-28 05:21:03,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:03,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:21:05,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:05,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747373846] [2024-11-28 05:21:05,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747373846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:05,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:05,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 05:21:05,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655284473] [2024-11-28 05:21:05,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:05,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 05:21:05,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:05,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 05:21:05,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:21:05,517 INFO L87 Difference]: Start difference. First operand 522 states and 592 transitions. Second operand has 13 states, 12 states have (on average 4.75) internal successors, (57), 13 states have internal predecessors, (57), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 05:21:08,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:21:08,110 INFO L93 Difference]: Finished difference Result 590 states and 670 transitions. [2024-11-28 05:21:08,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:21:08,111 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.75) internal successors, (57), 13 states have internal predecessors, (57), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 134 [2024-11-28 05:21:08,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:21:08,114 INFO L225 Difference]: With dead ends: 590 [2024-11-28 05:21:08,114 INFO L226 Difference]: Without dead ends: 588 [2024-11-28 05:21:08,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:21:08,115 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 124 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:21:08,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 669 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 05:21:08,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-11-28 05:21:08,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 526. [2024-11-28 05:21:08,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 448 states have (on average 1.09375) internal successors, (490), 450 states have internal predecessors, (490), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:21:08,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 598 transitions. [2024-11-28 05:21:08,240 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 598 transitions. Word has length 134 [2024-11-28 05:21:08,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:21:08,240 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 598 transitions. [2024-11-28 05:21:08,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.75) internal successors, (57), 13 states have internal predecessors, (57), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 05:21:08,240 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 598 transitions. [2024-11-28 05:21:08,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-28 05:21:08,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:21:08,242 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:08,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-28 05:21:08,242 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:21:08,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:08,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2122958512, now seen corresponding path program 1 times [2024-11-28 05:21:08,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:08,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144510976] [2024-11-28 05:21:08,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:08,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:21:08,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366087250] [2024-11-28 05:21:08,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:08,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:08,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:21:08,353 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:21:08,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 05:21:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:08,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-28 05:21:08,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:21:12,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:21:13,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:21:14,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:21:15,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:21:17,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:17,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:17,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 28 [2024-11-28 05:21:18,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 57 [2024-11-28 05:21:18,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:18,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:18,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:18,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:18,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:18,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:18,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:18,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 97 [2024-11-28 05:21:19,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:19,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:19,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:19,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:19,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:19,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:19,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:19,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:19,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:19,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:19,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:19,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 61 [2024-11-28 05:21:25,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:25,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:25,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:25,403 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:21:25,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 152 treesize of output 148 [2024-11-28 05:21:29,793 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-11-28 05:21:29,793 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:22:11,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:22:11,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144510976] [2024-11-28 05:22:11,440 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:22:11,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366087250] [2024-11-28 05:22:11,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366087250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:22:11,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:22:11,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-28 05:22:11,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059691833] [2024-11-28 05:22:11,440 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 05:22:11,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 05:22:11,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:22:11,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 05:22:11,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=711, Unknown=1, NotChecked=0, Total=870 [2024-11-28 05:22:11,441 INFO L87 Difference]: Start difference. First operand 526 states and 598 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 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) [2024-11-28 05:22:42,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:22:42,926 INFO L93 Difference]: Finished difference Result 1023 states and 1164 transitions. [2024-11-28 05:22:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 05:22:42,927 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 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 136 [2024-11-28 05:22:42,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:22:42,929 INFO L225 Difference]: With dead ends: 1023 [2024-11-28 05:22:42,929 INFO L226 Difference]: Without dead ends: 583 [2024-11-28 05:22:42,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 44.8s TimeCoverageRelationStatistics Valid=405, Invalid=1400, Unknown=1, NotChecked=0, Total=1806 [2024-11-28 05:22:42,931 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 188 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:22:42,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 741 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 24.3s Time] [2024-11-28 05:22:42,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2024-11-28 05:22:43,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 536. [2024-11-28 05:22:43,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 458 states have (on average 1.091703056768559) internal successors, (500), 460 states have internal predecessors, (500), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:22:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 608 transitions. [2024-11-28 05:22:43,051 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 608 transitions. Word has length 136 [2024-11-28 05:22:43,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:22:43,051 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 608 transitions. [2024-11-28 05:22:43,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 16 states have internal predecessors, (62), 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) [2024-11-28 05:22:43,051 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 608 transitions. [2024-11-28 05:22:43,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-28 05:22:43,052 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:22:43,052 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:22:43,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 05:22:43,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 05:22:43,252 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:22:43,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:22:43,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1881991125, now seen corresponding path program 1 times [2024-11-28 05:22:43,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:22:43,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430090437] [2024-11-28 05:22:43,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:43,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:22:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:44,887 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-28 05:22:44,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:22:44,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430090437] [2024-11-28 05:22:44,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430090437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:22:44,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923085697] [2024-11-28 05:22:44,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:44,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:22:44,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:22:44,890 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:22:44,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 05:22:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:45,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 05:22:45,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:22:46,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:22:47,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:22:48,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:22:49,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:22:50,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:22:51,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:22:52,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:22:52,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:22:52,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:22:52,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:22:53,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2024-11-28 05:22:53,048 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 183 proven. 136 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-28 05:22:53,048 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:22:53,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923085697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:22:53,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:22:53,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2024-11-28 05:22:53,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389510073] [2024-11-28 05:22:53,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:22:53,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 05:22:53,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:22:53,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 05:22:53,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-11-28 05:22:53,687 INFO L87 Difference]: Start difference. First operand 536 states and 608 transitions. Second operand has 20 states, 18 states have (on average 6.777777777777778) internal successors, (122), 20 states have internal predecessors, (122), 9 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 7 states have call predecessors, (32), 9 states have call successors, (32) [2024-11-28 05:22:56,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:22:56,122 INFO L93 Difference]: Finished difference Result 1010 states and 1141 transitions. [2024-11-28 05:22:56,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:22:56,123 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 6.777777777777778) internal successors, (122), 20 states have internal predecessors, (122), 9 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 7 states have call predecessors, (32), 9 states have call successors, (32) Word has length 136 [2024-11-28 05:22:56,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:22:56,125 INFO L225 Difference]: With dead ends: 1010 [2024-11-28 05:22:56,125 INFO L226 Difference]: Without dead ends: 560 [2024-11-28 05:22:56,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2024-11-28 05:22:56,126 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 303 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:22:56,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 215 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 05:22:56,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-28 05:22:56,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 544. [2024-11-28 05:22:56,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 464 states have (on average 1.0862068965517242) internal successors, (504), 466 states have internal predecessors, (504), 54 states have call successors, (54), 25 states have call predecessors, (54), 25 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:22:56,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 612 transitions. [2024-11-28 05:22:56,245 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 612 transitions. Word has length 136 [2024-11-28 05:22:56,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:22:56,246 INFO L471 AbstractCegarLoop]: Abstraction has 544 states and 612 transitions. [2024-11-28 05:22:56,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 6.777777777777778) internal successors, (122), 20 states have internal predecessors, (122), 9 states have call successors, (32), 4 states have call predecessors, (32), 6 states have return successors, (32), 7 states have call predecessors, (32), 9 states have call successors, (32) [2024-11-28 05:22:56,246 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 612 transitions. [2024-11-28 05:22:56,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-28 05:22:56,247 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:22:56,247 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:22:56,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 05:22:56,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 05:22:56,448 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:22:56,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:22:56,448 INFO L85 PathProgramCache]: Analyzing trace with hash 295605232, now seen corresponding path program 1 times [2024-11-28 05:22:56,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:22:56,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449202505] [2024-11-28 05:22:56,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:56,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:22:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 54 proven. 30 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-28 05:22:57,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:22:57,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449202505] [2024-11-28 05:22:57,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449202505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:22:57,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330074649] [2024-11-28 05:22:57,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:57,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:22:57,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:22:57,795 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:22:57,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 05:22:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:58,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-28 05:22:58,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:23:01,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:23:03,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:23:04,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-11-28 05:23:05,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-11-28 05:23:07,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:07,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:07,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-11-28 05:23:08,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2024-11-28 05:23:08,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:08,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:08,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 65 [2024-11-28 05:23:08,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:08,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:08,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:08,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:08,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 35 [2024-11-28 05:23:09,799 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:23:09,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 76 treesize of output 84 [2024-11-28 05:23:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 216 proven. 130 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-28 05:23:10,334 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:23:13,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330074649] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:23:13,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:23:13,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 28 [2024-11-28 05:23:13,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131576351] [2024-11-28 05:23:13,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:23:13,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 05:23:13,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:23:13,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 05:23:13,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 05:23:13,603 INFO L87 Difference]: Start difference. First operand 544 states and 612 transitions. Second operand has 28 states, 24 states have (on average 5.166666666666667) internal successors, (124), 28 states have internal predecessors, (124), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 8 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-28 05:23:21,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:23:21,532 INFO L93 Difference]: Finished difference Result 1127 states and 1259 transitions. [2024-11-28 05:23:21,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 05:23:21,532 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 5.166666666666667) internal successors, (124), 28 states have internal predecessors, (124), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 8 states have call predecessors, (32), 12 states have call successors, (32) Word has length 136 [2024-11-28 05:23:21,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:23:21,535 INFO L225 Difference]: With dead ends: 1127 [2024-11-28 05:23:21,535 INFO L226 Difference]: Without dead ends: 669 [2024-11-28 05:23:21,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=434, Invalid=2016, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 05:23:21,536 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 415 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:23:21,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 662 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-28 05:23:21,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-11-28 05:23:21,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 511. [2024-11-28 05:23:21,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 426 states have (on average 1.07981220657277) internal successors, (460), 428 states have internal predecessors, (460), 54 states have call successors, (54), 30 states have call predecessors, (54), 30 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:23:21,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 568 transitions. [2024-11-28 05:23:21,674 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 568 transitions. Word has length 136 [2024-11-28 05:23:21,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:23:21,674 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 568 transitions. [2024-11-28 05:23:21,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 5.166666666666667) internal successors, (124), 28 states have internal predecessors, (124), 12 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (32), 8 states have call predecessors, (32), 12 states have call successors, (32) [2024-11-28 05:23:21,675 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 568 transitions. [2024-11-28 05:23:21,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-28 05:23:21,675 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:23:21,675 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:23:21,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 05:23:21,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 05:23:21,876 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:23:21,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:23:21,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2048270288, now seen corresponding path program 1 times [2024-11-28 05:23:21,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:23:21,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127607932] [2024-11-28 05:23:21,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:21,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:23:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:23:21,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650714368] [2024-11-28 05:23:21,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:23:21,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:23:21,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:23:21,992 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:23:21,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 05:23:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:23:22,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-28 05:23:22,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:23:26,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:23:27,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:23:28,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:23:29,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:23:31,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:31,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:31,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 28 [2024-11-28 05:23:32,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 57 [2024-11-28 05:23:32,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:32,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:32,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:32,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:32,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:32,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:32,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:32,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 97 [2024-11-28 05:23:32,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:32,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:32,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:32,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:32,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:32,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:32,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:32,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:32,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:32,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:32,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:32,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 61 [2024-11-28 05:23:34,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:34,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:34,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:23:35,136 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:23:35,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 144 treesize of output 144 [2024-11-28 05:23:36,525 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-11-28 05:23:36,525 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:24:11,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:11,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127607932] [2024-11-28 05:24:11,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:24:11,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650714368] [2024-11-28 05:24:11,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650714368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:11,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:24:11,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-28 05:24:11,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15309511] [2024-11-28 05:24:11,341 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 05:24:11,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:24:11,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:11,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:24:11,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=360, Unknown=1, NotChecked=0, Total=462 [2024-11-28 05:24:11,342 INFO L87 Difference]: Start difference. First operand 511 states and 568 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 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) [2024-11-28 05:24:16,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:16,269 INFO L93 Difference]: Finished difference Result 989 states and 1099 transitions. [2024-11-28 05:24:16,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:24:16,270 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 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 136 [2024-11-28 05:24:16,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:16,271 INFO L225 Difference]: With dead ends: 989 [2024-11-28 05:24:16,272 INFO L226 Difference]: Without dead ends: 568 [2024-11-28 05:24:16,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 30.7s TimeCoverageRelationStatistics Valid=236, Invalid=693, Unknown=1, NotChecked=0, Total=930 [2024-11-28 05:24:16,273 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 218 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:16,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 641 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 05:24:16,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-28 05:24:16,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 521. [2024-11-28 05:24:16,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 436 states have (on average 1.0779816513761469) internal successors, (470), 438 states have internal predecessors, (470), 54 states have call successors, (54), 30 states have call predecessors, (54), 30 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:24:16,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 578 transitions. [2024-11-28 05:24:16,413 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 578 transitions. Word has length 136 [2024-11-28 05:24:16,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:16,413 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 578 transitions. [2024-11-28 05:24:16,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 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) [2024-11-28 05:24:16,413 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 578 transitions. [2024-11-28 05:24:16,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-28 05:24:16,414 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:16,414 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:16,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 05:24:16,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 05:24:16,615 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:24:16,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:16,615 INFO L85 PathProgramCache]: Analyzing trace with hash 171866736, now seen corresponding path program 1 times [2024-11-28 05:24:16,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:16,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062222697] [2024-11-28 05:24:16,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:16,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 60 proven. 24 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-28 05:24:21,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:24:21,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062222697] [2024-11-28 05:24:21,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062222697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:21,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489228819] [2024-11-28 05:24:21,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:21,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:21,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:21,474 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:21,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 05:24:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:21,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-28 05:24:21,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:25,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:24:26,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:24:27,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:24:29,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-11-28 05:24:31,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:31,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:31,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-11-28 05:24:31,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2024-11-28 05:24:31,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:31,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:31,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 65 [2024-11-28 05:24:31,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:31,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:31,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:31,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:31,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 35 [2024-11-28 05:24:33,192 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:24:33,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 76 treesize of output 84 [2024-11-28 05:24:33,539 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 204 proven. 124 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-28 05:24:33,539 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:24:35,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489228819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:24:35,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:24:35,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 32 [2024-11-28 05:24:35,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961669046] [2024-11-28 05:24:35,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:24:35,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 05:24:35,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:24:35,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 05:24:35,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1179, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 05:24:35,409 INFO L87 Difference]: Start difference. First operand 521 states and 578 transitions. Second operand has 32 states, 27 states have (on average 4.481481481481482) internal successors, (121), 30 states have internal predecessors, (121), 11 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 8 states have call predecessors, (32), 11 states have call successors, (32) [2024-11-28 05:24:47,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:24:47,794 INFO L93 Difference]: Finished difference Result 1102 states and 1219 transitions. [2024-11-28 05:24:47,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 05:24:47,795 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 4.481481481481482) internal successors, (121), 30 states have internal predecessors, (121), 11 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 8 states have call predecessors, (32), 11 states have call successors, (32) Word has length 136 [2024-11-28 05:24:47,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:24:47,797 INFO L225 Difference]: With dead ends: 1102 [2024-11-28 05:24:47,797 INFO L226 Difference]: Without dead ends: 634 [2024-11-28 05:24:47,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 162 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=665, Invalid=2995, Unknown=0, NotChecked=0, Total=3660 [2024-11-28 05:24:47,798 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 490 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1903 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 2225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:24:47,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 839 Invalid, 2225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1903 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-28 05:24:47,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-11-28 05:24:47,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 476. [2024-11-28 05:24:47,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 389 states have (on average 1.0719794344473008) internal successors, (417), 391 states have internal predecessors, (417), 54 states have call successors, (54), 32 states have call predecessors, (54), 32 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:24:47,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 525 transitions. [2024-11-28 05:24:47,963 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 525 transitions. Word has length 136 [2024-11-28 05:24:47,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:24:47,963 INFO L471 AbstractCegarLoop]: Abstraction has 476 states and 525 transitions. [2024-11-28 05:24:47,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 4.481481481481482) internal successors, (121), 30 states have internal predecessors, (121), 11 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 8 states have call predecessors, (32), 11 states have call successors, (32) [2024-11-28 05:24:47,964 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 525 transitions. [2024-11-28 05:24:47,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-28 05:24:47,965 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:24:47,965 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:24:47,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 05:24:48,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 05:24:48,165 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:24:48,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:24:48,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1546595333, now seen corresponding path program 1 times [2024-11-28 05:24:48,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:24:48,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358210793] [2024-11-28 05:24:48,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:48,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:24:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:24:48,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81919711] [2024-11-28 05:24:48,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:24:48,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:24:48,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:24:48,267 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:24:48,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 05:24:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:24:48,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-28 05:24:48,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:24:52,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:24:53,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:24:54,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:24:55,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 05:24:56,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:56,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:56,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2024-11-28 05:24:57,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 58 [2024-11-28 05:24:57,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:57,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:57,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:57,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:57,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:57,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 88 [2024-11-28 05:24:58,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:58,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:58,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:58,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:58,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:58,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:58,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:58,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:24:58,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 63 [2024-11-28 05:25:05,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:25:05,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:25:05,221 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:25:05,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 197 treesize of output 157 [2024-11-28 05:25:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 189 proven. 127 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-28 05:25:06,741 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:25:43,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:25:43,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358210793] [2024-11-28 05:25:43,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:25:43,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81919711] [2024-11-28 05:25:43,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81919711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:25:43,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:25:43,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2024-11-28 05:25:43,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675489878] [2024-11-28 05:25:43,816 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 05:25:43,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 05:25:43,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:25:43,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 05:25:43,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1055, Unknown=1, NotChecked=0, Total=1190 [2024-11-28 05:25:43,817 INFO L87 Difference]: Start difference. First operand 476 states and 525 transitions. Second operand has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 21 states have internal predecessors, (70), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 05:25:58,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:25:58,709 INFO L93 Difference]: Finished difference Result 892 states and 981 transitions. [2024-11-28 05:25:58,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 05:25:58,710 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 21 states have internal predecessors, (70), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 138 [2024-11-28 05:25:58,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:25:58,712 INFO L225 Difference]: With dead ends: 892 [2024-11-28 05:25:58,712 INFO L226 Difference]: Without dead ends: 510 [2024-11-28 05:25:58,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=391, Invalid=2260, Unknown=1, NotChecked=0, Total=2652 [2024-11-28 05:25:58,713 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 367 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:25:58,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 793 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-28 05:25:58,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-11-28 05:25:58,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 476. [2024-11-28 05:25:58,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 389 states have (on average 1.069408740359897) internal successors, (416), 391 states have internal predecessors, (416), 54 states have call successors, (54), 32 states have call predecessors, (54), 32 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:25:58,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 524 transitions. [2024-11-28 05:25:58,891 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 524 transitions. Word has length 138 [2024-11-28 05:25:58,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:25:58,891 INFO L471 AbstractCegarLoop]: Abstraction has 476 states and 524 transitions. [2024-11-28 05:25:58,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 21 states have internal predecessors, (70), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 05:25:58,891 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 524 transitions. [2024-11-28 05:25:58,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-28 05:25:58,892 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:25:58,892 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:25:58,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 05:25:59,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:59,092 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:25:59,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:25:59,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1662261711, now seen corresponding path program 1 times [2024-11-28 05:25:59,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:25:59,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655168799] [2024-11-28 05:25:59,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:59,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:25:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:25:59,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352360586] [2024-11-28 05:25:59,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:25:59,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:25:59,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:25:59,248 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:25:59,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 05:25:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:25:59,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 05:25:59,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:26:03,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:26:04,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:26:04,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:26:05,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:26:05,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:26:05,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:26:05,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2024-11-28 05:26:05,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:26:05,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 28 [2024-11-28 05:26:05,898 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-11-28 05:26:05,898 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:26:15,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:26:15,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655168799] [2024-11-28 05:26:15,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:26:15,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352360586] [2024-11-28 05:26:15,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352360586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:26:15,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:26:15,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-11-28 05:26:15,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113177751] [2024-11-28 05:26:15,179 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 05:26:15,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:26:15,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:26:15,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:26:15,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=139, Unknown=1, NotChecked=0, Total=182 [2024-11-28 05:26:15,180 INFO L87 Difference]: Start difference. First operand 476 states and 524 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 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) [2024-11-28 05:26:16,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:16,871 INFO L93 Difference]: Finished difference Result 879 states and 966 transitions. [2024-11-28 05:26:16,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:26:16,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 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 138 [2024-11-28 05:26:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:16,874 INFO L225 Difference]: With dead ends: 879 [2024-11-28 05:26:16,874 INFO L226 Difference]: Without dead ends: 497 [2024-11-28 05:26:16,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=84, Invalid=221, Unknown=1, NotChecked=0, Total=306 [2024-11-28 05:26:16,876 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 88 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:16,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 239 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 05:26:16,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2024-11-28 05:26:17,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 464. [2024-11-28 05:26:17,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 377 states have (on average 1.0610079575596818) internal successors, (400), 379 states have internal predecessors, (400), 54 states have call successors, (54), 32 states have call predecessors, (54), 32 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:26:17,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 508 transitions. [2024-11-28 05:26:17,046 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 508 transitions. Word has length 138 [2024-11-28 05:26:17,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:17,046 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 508 transitions. [2024-11-28 05:26:17,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 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) [2024-11-28 05:26:17,047 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 508 transitions. [2024-11-28 05:26:17,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-28 05:26:17,047 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:17,047 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:17,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 05:26:17,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:17,248 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:26:17,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:17,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1401982331, now seen corresponding path program 1 times [2024-11-28 05:26:17,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:26:17,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7632800] [2024-11-28 05:26:17,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:17,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:26:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:26:17,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445893639] [2024-11-28 05:26:17,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:17,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:26:17,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:26:17,375 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:26:17,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 05:26:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:17,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 05:26:17,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:26:21,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:26:22,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:26:22,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:26:23,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 44 [2024-11-28 05:26:23,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:26:23,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:26:23,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:26:23,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 70 [2024-11-28 05:26:23,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:26:23,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:26:23,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:26:23,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:26:23,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:26:23,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2024-11-28 05:26:26,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:26:26,697 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:26:26,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 106 treesize of output 98 [2024-11-28 05:26:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2024-11-28 05:26:27,034 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:26:44,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:26:44,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7632800] [2024-11-28 05:26:44,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:26:44,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445893639] [2024-11-28 05:26:44,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445893639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:26:44,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:26:44,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-28 05:26:44,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658305638] [2024-11-28 05:26:44,922 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 05:26:44,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:26:44,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:26:44,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:26:44,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=181, Unknown=1, NotChecked=0, Total=240 [2024-11-28 05:26:44,923 INFO L87 Difference]: Start difference. First operand 464 states and 508 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 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) [2024-11-28 05:26:47,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:47,673 INFO L93 Difference]: Finished difference Result 855 states and 935 transitions. [2024-11-28 05:26:47,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:26:47,674 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 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 138 [2024-11-28 05:26:47,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:47,676 INFO L225 Difference]: With dead ends: 855 [2024-11-28 05:26:47,676 INFO L226 Difference]: Without dead ends: 473 [2024-11-28 05:26:47,676 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=117, Invalid=302, Unknown=1, NotChecked=0, Total=420 [2024-11-28 05:26:47,677 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 168 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:47,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 302 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 05:26:47,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-11-28 05:26:47,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 464. [2024-11-28 05:26:47,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 377 states have (on average 1.0557029177718833) internal successors, (398), 379 states have internal predecessors, (398), 54 states have call successors, (54), 32 states have call predecessors, (54), 32 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:26:47,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 506 transitions. [2024-11-28 05:26:47,848 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 506 transitions. Word has length 138 [2024-11-28 05:26:47,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:47,848 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 506 transitions. [2024-11-28 05:26:47,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 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) [2024-11-28 05:26:47,849 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 506 transitions. [2024-11-28 05:26:47,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-28 05:26:47,849 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:47,849 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:47,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 05:26:48,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-28 05:26:48,050 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:26:48,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:48,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1644945126, now seen corresponding path program 1 times [2024-11-28 05:26:48,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:26:48,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124029224] [2024-11-28 05:26:48,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:48,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:26:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:26:50,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:26:50,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124029224] [2024-11-28 05:26:50,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124029224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:26:50,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:26:50,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-28 05:26:50,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675137051] [2024-11-28 05:26:50,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:26:50,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 05:26:50,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:26:50,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 05:26:50,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:26:50,878 INFO L87 Difference]: Start difference. First operand 464 states and 506 transitions. Second operand has 19 states, 17 states have (on average 3.823529411764706) internal successors, (65), 18 states have internal predecessors, (65), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 05:26:56,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:26:56,192 INFO L93 Difference]: Finished difference Result 577 states and 627 transitions. [2024-11-28 05:26:56,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 05:26:56,193 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.823529411764706) internal successors, (65), 18 states have internal predecessors, (65), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 142 [2024-11-28 05:26:56,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:26:56,194 INFO L225 Difference]: With dead ends: 577 [2024-11-28 05:26:56,195 INFO L226 Difference]: Without dead ends: 575 [2024-11-28 05:26:56,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2024-11-28 05:26:56,195 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 192 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:26:56,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 844 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 05:26:56,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-11-28 05:26:56,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 528. [2024-11-28 05:26:56,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 441 states have (on average 1.056689342403628) internal successors, (466), 443 states have internal predecessors, (466), 54 states have call successors, (54), 32 states have call predecessors, (54), 32 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:26:56,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 574 transitions. [2024-11-28 05:26:56,373 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 574 transitions. Word has length 142 [2024-11-28 05:26:56,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:26:56,373 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 574 transitions. [2024-11-28 05:26:56,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.823529411764706) internal successors, (65), 18 states have internal predecessors, (65), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 05:26:56,373 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 574 transitions. [2024-11-28 05:26:56,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-28 05:26:56,373 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:26:56,374 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:26:56,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-28 05:26:56,374 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:26:56,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:26:56,374 INFO L85 PathProgramCache]: Analyzing trace with hash -964886756, now seen corresponding path program 1 times [2024-11-28 05:26:56,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:26:56,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613798723] [2024-11-28 05:26:56,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:26:56,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:26:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:26:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:26:58,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:26:58,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613798723] [2024-11-28 05:26:58,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613798723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:26:58,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:26:58,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 05:26:58,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397721241] [2024-11-28 05:26:58,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:26:58,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:26:58,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:26:58,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:26:58,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:26:58,209 INFO L87 Difference]: Start difference. First operand 528 states and 574 transitions. Second operand has 12 states, 10 states have (on average 6.5) internal successors, (65), 12 states have internal predecessors, (65), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-28 05:27:00,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:27:00,432 INFO L93 Difference]: Finished difference Result 1064 states and 1160 transitions. [2024-11-28 05:27:00,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:27:00,432 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.5) internal successors, (65), 12 states have internal predecessors, (65), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 5 states have call successors, (16) Word has length 142 [2024-11-28 05:27:00,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:27:00,434 INFO L225 Difference]: With dead ends: 1064 [2024-11-28 05:27:00,434 INFO L226 Difference]: Without dead ends: 618 [2024-11-28 05:27:00,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2024-11-28 05:27:00,435 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 255 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:27:00,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 344 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 05:27:00,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2024-11-28 05:27:00,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 528. [2024-11-28 05:27:00,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 441 states have (on average 1.0498866213151927) internal successors, (463), 443 states have internal predecessors, (463), 54 states have call successors, (54), 32 states have call predecessors, (54), 32 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:27:00,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 571 transitions. [2024-11-28 05:27:00,613 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 571 transitions. Word has length 142 [2024-11-28 05:27:00,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:27:00,613 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 571 transitions. [2024-11-28 05:27:00,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.5) internal successors, (65), 12 states have internal predecessors, (65), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-28 05:27:00,613 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 571 transitions. [2024-11-28 05:27:00,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-28 05:27:00,614 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:27:00,614 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:27:00,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-28 05:27:00,615 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:27:00,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:27:00,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1622312872, now seen corresponding path program 1 times [2024-11-28 05:27:00,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:27:00,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536456367] [2024-11-28 05:27:00,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:27:00,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:27:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:27:01,253 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:27:01,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:27:01,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536456367] [2024-11-28 05:27:01,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536456367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:27:01,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:27:01,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:27:01,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756440390] [2024-11-28 05:27:01,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:27:01,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:27:01,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:27:01,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:27:01,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:27:01,254 INFO L87 Difference]: Start difference. First operand 528 states and 571 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:27:02,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:27:02,454 INFO L93 Difference]: Finished difference Result 989 states and 1067 transitions. [2024-11-28 05:27:02,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:27:02,455 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 142 [2024-11-28 05:27:02,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:27:02,457 INFO L225 Difference]: With dead ends: 989 [2024-11-28 05:27:02,458 INFO L226 Difference]: Without dead ends: 543 [2024-11-28 05:27:02,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:27:02,459 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 148 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:27:02,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 310 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 05:27:02,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-11-28 05:27:02,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 528. [2024-11-28 05:27:02,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 441 states have (on average 1.0430839002267573) internal successors, (460), 443 states have internal predecessors, (460), 54 states have call successors, (54), 32 states have call predecessors, (54), 32 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:27:02,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 568 transitions. [2024-11-28 05:27:02,680 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 568 transitions. Word has length 142 [2024-11-28 05:27:02,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:27:02,681 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 568 transitions. [2024-11-28 05:27:02,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:27:02,681 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 568 transitions. [2024-11-28 05:27:02,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-28 05:27:02,682 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:27:02,682 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:27:02,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-28 05:27:02,682 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:27:02,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:27:02,682 INFO L85 PathProgramCache]: Analyzing trace with hash -942254502, now seen corresponding path program 1 times [2024-11-28 05:27:02,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:27:02,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882495281] [2024-11-28 05:27:02,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:27:02,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:27:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:27:03,502 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:27:03,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:27:03,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882495281] [2024-11-28 05:27:03,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882495281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:27:03,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:27:03,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 05:27:03,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805612651] [2024-11-28 05:27:03,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:27:03,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 05:27:03,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:27:03,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 05:27:03,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:27:03,504 INFO L87 Difference]: Start difference. First operand 528 states and 568 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:27:05,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:27:05,102 INFO L93 Difference]: Finished difference Result 549 states and 589 transitions. [2024-11-28 05:27:05,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:27:05,103 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 142 [2024-11-28 05:27:05,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:27:05,106 INFO L225 Difference]: With dead ends: 549 [2024-11-28 05:27:05,106 INFO L226 Difference]: Without dead ends: 547 [2024-11-28 05:27:05,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-11-28 05:27:05,107 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 23 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:27:05,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1351 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 05:27:05,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2024-11-28 05:27:05,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 511. [2024-11-28 05:27:05,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 424 states have (on average 1.0400943396226414) internal successors, (441), 426 states have internal predecessors, (441), 54 states have call successors, (54), 32 states have call predecessors, (54), 32 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 05:27:05,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 549 transitions. [2024-11-28 05:27:05,386 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 549 transitions. Word has length 142 [2024-11-28 05:27:05,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:27:05,386 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 549 transitions. [2024-11-28 05:27:05,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:27:05,387 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 549 transitions. [2024-11-28 05:27:05,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-28 05:27:05,388 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:27:05,389 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:27:05,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-28 05:27:05,389 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:27:05,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:27:05,389 INFO L85 PathProgramCache]: Analyzing trace with hash 79684764, now seen corresponding path program 1 times [2024-11-28 05:27:05,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:27:05,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185474590] [2024-11-28 05:27:05,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:27:05,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:27:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:27:05,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318016454] [2024-11-28 05:27:05,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:27:05,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:27:05,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:27:05,513 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:27:05,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 05:27:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:27:05,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-28 05:27:05,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:27:05,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2024-11-28 05:27:06,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:27:06,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:27:07,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:27:07,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:27:08,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:27:09,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:27:09,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:27:10,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-28 05:27:11,244 INFO L349 Elim1Store]: treesize reduction 15, result has 54.5 percent of original size [2024-11-28 05:27:11,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 91 treesize of output 83 [2024-11-28 05:27:13,006 INFO L349 Elim1Store]: treesize reduction 42, result has 45.5 percent of original size [2024-11-28 05:27:13,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 338 treesize of output 283 [2024-11-28 05:27:26,202 INFO L349 Elim1Store]: treesize reduction 287, result has 29.5 percent of original size [2024-11-28 05:27:26,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 961 treesize of output 821 [2024-11-28 05:28:09,592 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-28 05:28:09,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-28 05:28:09,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:28:09,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185474590] [2024-11-28 05:28:09,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:28:09,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318016454] [2024-11-28 05:28:09,593 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-28 05:28:09,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 05:28:09,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-28 05:28:09,794 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:912) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:555) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 44 more [2024-11-28 05:28:09,800 INFO L158 Benchmark]: Toolchain (without parser) took 757284.12ms. Allocated memory was 117.4MB in the beginning and 1.0GB in the end (delta: 931.1MB). Free memory was 92.2MB in the beginning and 988.5MB in the end (delta: -896.3MB). Peak memory consumption was 639.0MB. Max. memory is 16.1GB. [2024-11-28 05:28:09,800 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 72.7MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:28:09,800 INFO L158 Benchmark]: CACSL2BoogieTranslator took 455.26ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 76.6MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 05:28:09,800 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.99ms. Allocated memory is still 117.4MB. Free memory was 76.6MB in the beginning and 72.8MB in the end (delta: 3.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:28:09,800 INFO L158 Benchmark]: Boogie Preprocessor took 93.37ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 68.8MB in the end (delta: 4.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 05:28:09,800 INFO L158 Benchmark]: RCFGBuilder took 1042.98ms. Allocated memory is still 117.4MB. Free memory was 68.8MB in the beginning and 88.8MB in the end (delta: -20.0MB). Peak memory consumption was 39.3MB. Max. memory is 16.1GB. [2024-11-28 05:28:09,800 INFO L158 Benchmark]: TraceAbstraction took 755593.19ms. Allocated memory was 117.4MB in the beginning and 1.0GB in the end (delta: 931.1MB). Free memory was 88.2MB in the beginning and 988.5MB in the end (delta: -900.3MB). Peak memory consumption was 633.2MB. Max. memory is 16.1GB. [2024-11-28 05:28:09,801 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 72.7MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 455.26ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 76.6MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.99ms. Allocated memory is still 117.4MB. Free memory was 76.6MB in the beginning and 72.8MB in the end (delta: 3.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 93.37ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 68.8MB in the end (delta: 4.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1042.98ms. Allocated memory is still 117.4MB. Free memory was 68.8MB in the beginning and 88.8MB in the end (delta: -20.0MB). Peak memory consumption was 39.3MB. Max. memory is 16.1GB. * TraceAbstraction took 755593.19ms. Allocated memory was 117.4MB in the beginning and 1.0GB in the end (delta: 931.1MB). Free memory was 88.2MB in the beginning and 988.5MB in the end (delta: -900.3MB). Peak memory consumption was 633.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB --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 05acb47e03e235712ff531dc9c262bde9a4e8849999fe7c0ae66487e3d96b2b6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:28:12,102 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:28:12,217 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-28 05:28:12,223 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:28:12,224 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:28:12,249 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:28:12,249 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:28:12,249 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:28:12,250 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:28:12,250 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:28:12,250 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:28:12,251 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:28:12,251 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:28:12,251 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:28:12,251 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:28:12,251 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:28:12,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:28:12,252 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:28:12,252 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:28:12,252 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:28:12,252 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:28:12,252 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:28:12,252 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:28:12,253 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:28:12,253 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 05:28:12,253 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 05:28:12,253 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:28:12,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:28:12,253 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:28:12,253 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:28:12,254 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:28:12,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:28:12,254 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:28:12,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:28:12,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:28:12,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:28:12,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:28:12,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:28:12,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:28:12,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:28:12,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:28:12,256 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:28:12,256 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:28:12,256 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:28:12,256 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 05:28:12,256 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 05:28:12,256 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:28:12,256 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:28:12,256 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:28:12,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:28:12,257 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_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 05acb47e03e235712ff531dc9c262bde9a4e8849999fe7c0ae66487e3d96b2b6 [2024-11-28 05:28:12,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:28:12,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:28:12,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:28:12,576 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:28:12,576 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:28:12,577 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-12.i [2024-11-28 05:28:15,558 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/data/5cb6841a1/30a38af9d95a43acb8dc6d046ef5a6d7/FLAGd7c29a2e4 [2024-11-28 05:28:15,821 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:28:15,823 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-12.i [2024-11-28 05:28:15,834 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/data/5cb6841a1/30a38af9d95a43acb8dc6d046ef5a6d7/FLAGd7c29a2e4 [2024-11-28 05:28:16,124 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/data/5cb6841a1/30a38af9d95a43acb8dc6d046ef5a6d7 [2024-11-28 05:28:16,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:28:16,128 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:28:16,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:28:16,130 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:28:16,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:28:16,138 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:28:16" (1/1) ... [2024-11-28 05:28:16,139 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b67805a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:16, skipping insertion in model container [2024-11-28 05:28:16,139 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:28:16" (1/1) ... [2024-11-28 05:28:16,167 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:28:16,317 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_f467542a-c6ff-442a-a5fd-47572eec1a06/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-12.i[917,930] [2024-11-28 05:28:16,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:28:16,396 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:28:16,408 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_f467542a-c6ff-442a-a5fd-47572eec1a06/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-12.i[917,930] [2024-11-28 05:28:16,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:28:16,474 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:28:16,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:16 WrapperNode [2024-11-28 05:28:16,475 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:28:16,476 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:28:16,476 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:28:16,476 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:28:16,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:16" (1/1) ... [2024-11-28 05:28:16,494 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:16" (1/1) ... [2024-11-28 05:28:16,528 INFO L138 Inliner]: procedures = 31, calls = 151, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 452 [2024-11-28 05:28:16,528 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:28:16,529 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:28:16,529 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:28:16,529 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:28:16,538 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:16" (1/1) ... [2024-11-28 05:28:16,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:16" (1/1) ... [2024-11-28 05:28:16,544 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:16" (1/1) ... [2024-11-28 05:28:16,566 INFO L175 MemorySlicer]: Split 124 memory accesses to 2 slices as follows [2, 122]. 98 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 26 writes are split as follows [0, 26]. [2024-11-28 05:28:16,566 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:16" (1/1) ... [2024-11-28 05:28:16,566 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:16" (1/1) ... [2024-11-28 05:28:16,597 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:16" (1/1) ... [2024-11-28 05:28:16,598 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:16" (1/1) ... [2024-11-28 05:28:16,605 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:16" (1/1) ... [2024-11-28 05:28:16,611 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:16" (1/1) ... [2024-11-28 05:28:16,613 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:16" (1/1) ... [2024-11-28 05:28:16,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:28:16,625 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:28:16,625 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:28:16,625 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:28:16,630 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:16" (1/1) ... [2024-11-28 05:28:16,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:28:16,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:28:16,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:28:16,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:28:16,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:28:16,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-28 05:28:16,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-28 05:28:16,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 05:28:16,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 05:28:16,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-28 05:28:16,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-28 05:28:16,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#0 [2024-11-28 05:28:16,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#1 [2024-11-28 05:28:16,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2024-11-28 05:28:16,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2024-11-28 05:28:16,706 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 05:28:16,707 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 05:28:16,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:28:16,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:28:16,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-28 05:28:16,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-28 05:28:16,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 05:28:16,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-28 05:28:16,897 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:28:16,900 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:28:17,687 INFO L? ?]: Removed 130 outVars from TransFormulas that were not future-live. [2024-11-28 05:28:17,688 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:28:17,699 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:28:17,699 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 05:28:17,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:28:17 BoogieIcfgContainer [2024-11-28 05:28:17,700 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:28:17,703 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:28:17,703 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:28:17,708 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:28:17,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:28:16" (1/3) ... [2024-11-28 05:28:17,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4132e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:28:17, skipping insertion in model container [2024-11-28 05:28:17,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:16" (2/3) ... [2024-11-28 05:28:17,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4132e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:28:17, skipping insertion in model container [2024-11-28 05:28:17,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:28:17" (3/3) ... [2024-11-28 05:28:17,712 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-12.i [2024-11-28 05:28:17,727 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:28:17,728 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-sp_file-12.i that has 2 procedures, 98 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 05:28:17,781 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:28:17,793 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;@60d14f8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:28:17,793 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:28:17,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 05:28:17,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 05:28:17,808 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:28:17,809 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:28:17,809 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:28:17,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:28:17,814 INFO L85 PathProgramCache]: Analyzing trace with hash -571948604, now seen corresponding path program 1 times [2024-11-28 05:28:17,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:28:17,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [259939892] [2024-11-28 05:28:17,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:28:17,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:28:17,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:28:17,829 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:28:17,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:28:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:28:18,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 05:28:18,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:28:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-11-28 05:28:18,223 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:28:18,224 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:28:18,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259939892] [2024-11-28 05:28:18,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259939892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:28:18,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:28:18,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:28:18,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885164535] [2024-11-28 05:28:18,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:28:18,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 05:28:18,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:28:18,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 05:28:18,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:28:18,251 INFO L87 Difference]: Start difference. First operand has 98 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 05:28:18,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:28:18,284 INFO L93 Difference]: Finished difference Result 183 states and 284 transitions. [2024-11-28 05:28:18,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 05:28:18,286 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 117 [2024-11-28 05:28:18,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:28:18,292 INFO L225 Difference]: With dead ends: 183 [2024-11-28 05:28:18,292 INFO L226 Difference]: Without dead ends: 88 [2024-11-28 05:28:18,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:28:18,298 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:28:18,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:28:18,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-28 05:28:18,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-28 05:28:18,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 70 states have (on average 1.3) internal successors, (91), 70 states have internal predecessors, (91), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 05:28:18,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 123 transitions. [2024-11-28 05:28:18,346 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 123 transitions. Word has length 117 [2024-11-28 05:28:18,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:28:18,348 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 123 transitions. [2024-11-28 05:28:18,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 05:28:18,349 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 123 transitions. [2024-11-28 05:28:18,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 05:28:18,356 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:28:18,356 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:28:18,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 05:28:18,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:28:18,557 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:28:18,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:28:18,558 INFO L85 PathProgramCache]: Analyzing trace with hash 760381860, now seen corresponding path program 1 times [2024-11-28 05:28:18,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:28:18,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185779140] [2024-11-28 05:28:18,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:28:18,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:28:18,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:28:18,563 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:28:18,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:28:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:28:18,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:28:18,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:28:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:28:18,931 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:28:18,931 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:28:18,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185779140] [2024-11-28 05:28:18,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185779140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:28:18,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:28:18,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:28:18,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806816273] [2024-11-28 05:28:18,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:28:18,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:28:18,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:28:18,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:28:18,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:28:18,936 INFO L87 Difference]: Start difference. First operand 88 states and 123 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:28:18,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:28:18,991 INFO L93 Difference]: Finished difference Result 173 states and 243 transitions. [2024-11-28 05:28:18,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:28:18,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 117 [2024-11-28 05:28:18,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:28:18,993 INFO L225 Difference]: With dead ends: 173 [2024-11-28 05:28:18,994 INFO L226 Difference]: Without dead ends: 88 [2024-11-28 05:28:18,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:28:18,997 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 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 [2024-11-28 05:28:18,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:28:18,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-28 05:28:19,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-28 05:28:19,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 70 states have internal predecessors, (90), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 05:28:19,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 122 transitions. [2024-11-28 05:28:19,019 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 122 transitions. Word has length 117 [2024-11-28 05:28:19,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:28:19,020 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 122 transitions. [2024-11-28 05:28:19,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:28:19,020 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 122 transitions. [2024-11-28 05:28:19,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-28 05:28:19,025 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:28:19,025 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:28:19,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 05:28:19,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:28:19,229 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:28:19,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:28:19,230 INFO L85 PathProgramCache]: Analyzing trace with hash -124307358, now seen corresponding path program 1 times [2024-11-28 05:28:19,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:28:19,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080240320] [2024-11-28 05:28:19,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:28:19,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:28:19,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:28:19,237 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:28:19,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:28:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:28:19,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:28:19,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:28:19,515 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:28:19,517 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:28:19,517 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:28:19,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080240320] [2024-11-28 05:28:19,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080240320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:28:19,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:28:19,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:28:19,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204005558] [2024-11-28 05:28:19,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:28:19,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:28:19,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:28:19,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:28:19,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:28:19,519 INFO L87 Difference]: Start difference. First operand 88 states and 122 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:28:19,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:28:19,588 INFO L93 Difference]: Finished difference Result 176 states and 245 transitions. [2024-11-28 05:28:19,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:28:19,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2024-11-28 05:28:19,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:28:19,592 INFO L225 Difference]: With dead ends: 176 [2024-11-28 05:28:19,592 INFO L226 Difference]: Without dead ends: 91 [2024-11-28 05:28:19,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:28:19,593 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:28:19,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 461 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:28:19,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-28 05:28:19,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-28 05:28:19,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 73 states have (on average 1.273972602739726) internal successors, (93), 73 states have internal predecessors, (93), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 05:28:19,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2024-11-28 05:28:19,614 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 119 [2024-11-28 05:28:19,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:28:19,615 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2024-11-28 05:28:19,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:28:19,616 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2024-11-28 05:28:19,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-28 05:28:19,621 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:28:19,621 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:28:19,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 05:28:19,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:28:19,822 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:28:19,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:28:19,823 INFO L85 PathProgramCache]: Analyzing trace with hash -233055546, now seen corresponding path program 1 times [2024-11-28 05:28:19,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:28:19,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942095992] [2024-11-28 05:28:19,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:28:19,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:28:19,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:28:19,826 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:28:19,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:28:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:28:20,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 05:28:20,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:28:22,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2024-11-28 05:28:23,296 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:28:23,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 40 [2024-11-28 05:28:23,415 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 42 proven. 96 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2024-11-28 05:28:23,416 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:28:23,728 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-28 05:28:23,729 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:28:23,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942095992] [2024-11-28 05:28:23,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942095992] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:28:23,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:28:23,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2024-11-28 05:28:23,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926961807] [2024-11-28 05:28:23,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:28:23,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:28:23,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:28:23,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:28:23,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2024-11-28 05:28:23,732 INFO L87 Difference]: Start difference. First operand 91 states and 125 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:28:24,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:28:24,315 INFO L93 Difference]: Finished difference Result 133 states and 177 transitions. [2024-11-28 05:28:24,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:28:24,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 121 [2024-11-28 05:28:24,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:28:24,317 INFO L225 Difference]: With dead ends: 133 [2024-11-28 05:28:24,317 INFO L226 Difference]: Without dead ends: 131 [2024-11-28 05:28:24,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2024-11-28 05:28:24,318 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 36 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:28:24,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 571 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:28:24,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-28 05:28:24,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2024-11-28 05:28:24,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 98 states have (on average 1.2755102040816326) internal successors, (125), 98 states have internal predecessors, (125), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 05:28:24,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 157 transitions. [2024-11-28 05:28:24,328 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 157 transitions. Word has length 121 [2024-11-28 05:28:24,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:28:24,329 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 157 transitions. [2024-11-28 05:28:24,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 05:28:24,329 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 157 transitions. [2024-11-28 05:28:24,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-28 05:28:24,331 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:28:24,331 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:28:24,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:28:24,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:28:24,535 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:28:24,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:28:24,536 INFO L85 PathProgramCache]: Analyzing trace with hash 44675301, now seen corresponding path program 1 times [2024-11-28 05:28:24,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:28:24,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082260627] [2024-11-28 05:28:24,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:28:24,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:28:24,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:28:24,538 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:28:24,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:28:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:28:24,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-28 05:28:24,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:28:25,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-28 05:28:27,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2024-11-28 05:28:27,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2024-11-28 05:28:28,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 33 [2024-11-28 05:28:28,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2024-11-28 05:28:30,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 63 [2024-11-28 05:28:31,235 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:28:31,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 62 [2024-11-28 05:28:31,457 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 249 proven. 126 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-28 05:28:31,457 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:28:33,035 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:28:33,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082260627] [2024-11-28 05:28:33,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082260627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:28:33,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1053919211] [2024-11-28 05:28:33,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:28:33,036 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 05:28:33,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 05:28:33,038 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 05:28:33,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-28 05:28:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:28:33,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-28 05:28:33,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:28:34,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:28:35,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2024-11-28 05:28:36,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2024-11-28 05:28:37,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 48 [2024-11-28 05:28:38,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 59 [2024-11-28 05:28:41,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 81 [2024-11-28 05:28:41,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 66 [2024-11-28 05:28:41,853 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 306 proven. 96 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-28 05:28:41,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:28:42,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1053919211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:28:42,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:28:42,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 52 [2024-11-28 05:28:42,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835434740] [2024-11-28 05:28:42,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:28:42,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-28 05:28:42,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:28:42,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-28 05:28:42,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=3876, Unknown=0, NotChecked=0, Total=4290 [2024-11-28 05:28:42,515 INFO L87 Difference]: Start difference. First operand 116 states and 157 transitions. Second operand has 53 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 41 states have internal predecessors, (124), 14 states have call successors, (32), 13 states have call predecessors, (32), 15 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2024-11-28 05:28:58,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:28:58,410 INFO L93 Difference]: Finished difference Result 292 states and 368 transitions. [2024-11-28 05:28:58,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-28 05:28:58,411 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 41 states have internal predecessors, (124), 14 states have call successors, (32), 13 states have call predecessors, (32), 15 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) Word has length 122 [2024-11-28 05:28:58,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:28:58,413 INFO L225 Difference]: With dead ends: 292 [2024-11-28 05:28:58,413 INFO L226 Difference]: Without dead ends: 290 [2024-11-28 05:28:58,417 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 246 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3282 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=1842, Invalid=10148, Unknown=0, NotChecked=0, Total=11990 [2024-11-28 05:28:58,418 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 1186 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 3336 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 3598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 3336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:28:58,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 1243 Invalid, 3598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 3336 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2024-11-28 05:28:58,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-28 05:28:58,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 221. [2024-11-28 05:28:58,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 190 states have (on average 1.2578947368421052) internal successors, (239), 191 states have internal predecessors, (239), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 05:28:58,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 283 transitions. [2024-11-28 05:28:58,450 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 283 transitions. Word has length 122 [2024-11-28 05:28:58,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:28:58,451 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 283 transitions. [2024-11-28 05:28:58,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 41 states have internal predecessors, (124), 14 states have call successors, (32), 13 states have call predecessors, (32), 15 states have return successors, (32), 14 states have call predecessors, (32), 14 states have call successors, (32) [2024-11-28 05:28:58,451 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 283 transitions. [2024-11-28 05:28:58,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-28 05:28:58,453 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:28:58,453 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:28:58,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-28 05:28:58,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 05:28:58,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:28:58,854 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:28:58,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:28:58,854 INFO L85 PathProgramCache]: Analyzing trace with hash 972179707, now seen corresponding path program 1 times [2024-11-28 05:28:58,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:28:58,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616887143] [2024-11-28 05:28:58,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:28:58,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:28:58,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:28:58,860 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:28:58,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f467542a-c6ff-442a-a5fd-47572eec1a06/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:28:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:28:59,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-28 05:28:59,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:29:00,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-28 05:29:00,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2024-11-28 05:29:01,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2024-11-28 05:29:01,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2024-11-28 05:29:02,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2024-11-28 05:29:03,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 48 [2024-11-28 05:29:03,922 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:29:03,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 54 [2024-11-28 05:29:04,145 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 243 proven. 126 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-28 05:29:04,145 INFO L312 TraceCheckSpWp]: Computing backward predicates...