./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-5.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_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/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_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/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_80f221e1-5564-480c-885b-93b8d57b027a/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 ef6497bb448d9a320776973de65f322a5dd7ce0e422c6531ce8baf2751ae72d5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:54:20,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:54:20,868 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:54:20,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:54:20,877 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:54:20,907 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:54:20,907 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:54:20,908 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:54:20,908 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:54:20,908 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:54:20,908 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:54:20,909 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:54:20,909 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:54:20,909 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:54:20,909 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:54:20,910 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:54:20,910 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:54:20,910 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:54:20,910 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:54:20,910 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:54:20,911 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:54:20,911 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:54:20,911 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:54:20,911 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:54:20,911 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:54:20,911 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:54:20,912 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:54:20,912 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:54:20,912 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:54:20,912 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:54:20,912 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:54:20,913 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:54:20,913 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:54:20,913 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:54:20,913 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:54:20,913 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:54:20,914 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:54:20,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:54:20,914 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:54:20,914 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:54:20,914 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:54:20,914 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:54:20,915 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:54:20,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:54:20,915 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:54:20,915 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:54:20,915 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:54:20,915 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:54:20,915 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_80f221e1-5564-480c-885b-93b8d57b027a/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 -> ef6497bb448d9a320776973de65f322a5dd7ce0e422c6531ce8baf2751ae72d5 [2024-11-28 02:54:21,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:54:21,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:54:21,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:54:21,285 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:54:21,286 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:54:21,287 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-5.i [2024-11-28 02:54:24,612 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/data/b572ded1a/770a5eebc0e44894855db1c0cbeb0d9f/FLAG891173f6a [2024-11-28 02:54:24,905 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:54:24,906 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-5.i [2024-11-28 02:54:24,920 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/data/b572ded1a/770a5eebc0e44894855db1c0cbeb0d9f/FLAG891173f6a [2024-11-28 02:54:24,950 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/data/b572ded1a/770a5eebc0e44894855db1c0cbeb0d9f [2024-11-28 02:54:24,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:54:24,956 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:54:24,958 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:54:24,959 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:54:24,964 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:54:24,965 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:54:24" (1/1) ... [2024-11-28 02:54:24,969 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d1cdc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:24, skipping insertion in model container [2024-11-28 02:54:24,970 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:54:24" (1/1) ... [2024-11-28 02:54:24,999 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:54:25,205 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_80f221e1-5564-480c-885b-93b8d57b027a/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-5.i[915,928] [2024-11-28 02:54:25,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:54:25,330 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:54:25,347 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_80f221e1-5564-480c-885b-93b8d57b027a/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-5.i[915,928] [2024-11-28 02:54:25,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:54:25,442 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:54:25,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:25 WrapperNode [2024-11-28 02:54:25,443 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:54:25,444 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:54:25,444 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:54:25,445 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:54:25,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:25" (1/1) ... [2024-11-28 02:54:25,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:25" (1/1) ... [2024-11-28 02:54:25,524 INFO L138 Inliner]: procedures = 27, calls = 154, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 410 [2024-11-28 02:54:25,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:54:25,525 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:54:25,525 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:54:25,525 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:54:25,541 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:25" (1/1) ... [2024-11-28 02:54:25,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:25" (1/1) ... [2024-11-28 02:54:25,554 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:25" (1/1) ... [2024-11-28 02:54:25,602 INFO L175 MemorySlicer]: Split 123 memory accesses to 2 slices as follows [2, 121]. 98 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 33 writes are split as follows [0, 33]. [2024-11-28 02:54:25,602 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:25" (1/1) ... [2024-11-28 02:54:25,606 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:25" (1/1) ... [2024-11-28 02:54:25,629 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:25" (1/1) ... [2024-11-28 02:54:25,631 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:25" (1/1) ... [2024-11-28 02:54:25,642 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:25" (1/1) ... [2024-11-28 02:54:25,645 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:25" (1/1) ... [2024-11-28 02:54:25,651 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:25" (1/1) ... [2024-11-28 02:54:25,659 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:54:25,664 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:54:25,664 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:54:25,664 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:54:25,665 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:25" (1/1) ... [2024-11-28 02:54:25,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:54:25,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:25,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:54:25,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:54:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:54:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 02:54:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 02:54:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:54:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:54:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:54:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:54:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:54:25,760 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:54:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:54:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:54:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:54:25,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:54:25,943 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:54:25,947 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:54:26,732 INFO L? ?]: Removed 94 outVars from TransFormulas that were not future-live. [2024-11-28 02:54:26,735 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:54:26,753 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:54:26,757 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:54:26,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:54:26 BoogieIcfgContainer [2024-11-28 02:54:26,758 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:54:26,761 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:54:26,762 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:54:26,769 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:54:26,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:54:24" (1/3) ... [2024-11-28 02:54:26,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a8228e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:54:26, skipping insertion in model container [2024-11-28 02:54:26,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:54:25" (2/3) ... [2024-11-28 02:54:26,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64a8228e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:54:26, skipping insertion in model container [2024-11-28 02:54:26,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:54:26" (3/3) ... [2024-11-28 02:54:26,775 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-5.i [2024-11-28 02:54:26,798 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:54:26,800 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-s_file-5.i that has 2 procedures, 96 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:54:26,899 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:54:26,915 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;@7ff2cfa5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:54:26,915 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:54:26,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 73 states have (on average 1.3287671232876712) internal successors, (97), 74 states have internal predecessors, (97), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 02:54:26,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 02:54:26,941 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:26,942 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:26,943 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:26,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:26,950 INFO L85 PathProgramCache]: Analyzing trace with hash -390685078, now seen corresponding path program 1 times [2024-11-28 02:54:26,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:26,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215069611] [2024-11-28 02:54:26,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:26,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:27,443 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-28 02:54:27,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:27,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215069611] [2024-11-28 02:54:27,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215069611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:27,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199801309] [2024-11-28 02:54:27,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:27,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:27,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:27,450 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:27,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:54:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:27,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:54:27,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-28 02:54:27,896 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:54:27,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199801309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:27,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:54:27,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:54:27,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43897755] [2024-11-28 02:54:27,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:27,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:54:27,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:27,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:54:27,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:54:27,941 INFO L87 Difference]: Start difference. First operand has 96 states, 73 states have (on average 1.3287671232876712) internal successors, (97), 74 states have internal predecessors, (97), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 02:54:27,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:27,975 INFO L93 Difference]: Finished difference Result 185 states and 288 transitions. [2024-11-28 02:54:27,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:54:27,978 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 148 [2024-11-28 02:54:27,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:27,987 INFO L225 Difference]: With dead ends: 185 [2024-11-28 02:54:27,987 INFO L226 Difference]: Without dead ends: 92 [2024-11-28 02:54:27,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 149 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 02:54:27,995 INFO L435 NwaCegarLoop]: 130 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, 130 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 02:54:27,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:54:28,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-28 02:54:28,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-28 02:54:28,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 70 states have internal predecessors, (90), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 02:54:28,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 130 transitions. [2024-11-28 02:54:28,049 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 130 transitions. Word has length 148 [2024-11-28 02:54:28,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:28,050 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 130 transitions. [2024-11-28 02:54:28,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 02:54:28,050 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 130 transitions. [2024-11-28 02:54:28,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 02:54:28,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:28,055 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:28,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:54:28,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:28,256 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:28,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:28,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1268903826, now seen corresponding path program 1 times [2024-11-28 02:54:28,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:28,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761342289] [2024-11-28 02:54:28,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:28,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-28 02:54:29,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:29,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761342289] [2024-11-28 02:54:29,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761342289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:29,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123223124] [2024-11-28 02:54:29,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:29,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:29,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:29,137 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:29,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:54:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:29,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:54:29,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:29,503 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:54:29,505 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:54:29,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123223124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:29,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:54:29,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 02:54:29,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617504056] [2024-11-28 02:54:29,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:29,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:54:29,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:29,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:54:29,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:54:29,511 INFO L87 Difference]: Start difference. First operand 92 states and 130 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:29,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:29,603 INFO L93 Difference]: Finished difference Result 184 states and 261 transitions. [2024-11-28 02:54:29,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:54:29,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2024-11-28 02:54:29,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:29,607 INFO L225 Difference]: With dead ends: 184 [2024-11-28 02:54:29,607 INFO L226 Difference]: Without dead ends: 95 [2024-11-28 02:54:29,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:54:29,612 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:29,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 370 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:54:29,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-28 02:54:29,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2024-11-28 02:54:29,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 72 states have internal predecessors, (92), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 02:54:29,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 132 transitions. [2024-11-28 02:54:29,645 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 132 transitions. Word has length 148 [2024-11-28 02:54:29,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:29,648 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 132 transitions. [2024-11-28 02:54:29,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:29,653 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 132 transitions. [2024-11-28 02:54:29,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 02:54:29,656 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:29,656 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:29,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:54:29,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:29,857 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:29,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:29,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1948962196, now seen corresponding path program 1 times [2024-11-28 02:54:29,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:29,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50712558] [2024-11-28 02:54:29,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:29,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-28 02:54:30,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:30,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50712558] [2024-11-28 02:54:30,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50712558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:30,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769371689] [2024-11-28 02:54:30,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:30,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:30,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:30,402 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:30,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:54:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:30,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:54:30,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:30,742 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:54:30,743 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:54:30,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769371689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:30,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:54:30,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 02:54:30,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267238897] [2024-11-28 02:54:30,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:30,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:54:30,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:30,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:54:30,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:54:30,748 INFO L87 Difference]: Start difference. First operand 94 states and 132 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:30,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:30,821 INFO L93 Difference]: Finished difference Result 188 states and 265 transitions. [2024-11-28 02:54:30,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:54:30,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2024-11-28 02:54:30,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:30,826 INFO L225 Difference]: With dead ends: 188 [2024-11-28 02:54:30,827 INFO L226 Difference]: Without dead ends: 97 [2024-11-28 02:54:30,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:54:30,830 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:30,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 371 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:54:30,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-28 02:54:30,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2024-11-28 02:54:30,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 74 states have (on average 1.2702702702702702) internal successors, (94), 74 states have internal predecessors, (94), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 02:54:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 134 transitions. [2024-11-28 02:54:30,860 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 134 transitions. Word has length 148 [2024-11-28 02:54:30,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:30,862 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 134 transitions. [2024-11-28 02:54:30,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:30,865 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 134 transitions. [2024-11-28 02:54:30,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 02:54:30,872 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:30,872 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:30,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:54:31,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:31,073 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:31,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:31,074 INFO L85 PathProgramCache]: Analyzing trace with hash -570997738, now seen corresponding path program 1 times [2024-11-28 02:54:31,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:31,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574159527] [2024-11-28 02:54:31,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:31,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:31,461 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-28 02:54:31,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:31,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574159527] [2024-11-28 02:54:31,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574159527] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:31,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815298001] [2024-11-28 02:54:31,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:31,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:31,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:31,465 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:31,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:54:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:31,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:54:31,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:54:31,839 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:54:31,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815298001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:31,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:54:31,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 02:54:31,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907142667] [2024-11-28 02:54:31,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:31,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:54:31,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:31,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:54:31,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:54:31,843 INFO L87 Difference]: Start difference. First operand 96 states and 134 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:31,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:31,898 INFO L93 Difference]: Finished difference Result 192 states and 269 transitions. [2024-11-28 02:54:31,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:54:31,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2024-11-28 02:54:31,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:31,903 INFO L225 Difference]: With dead ends: 192 [2024-11-28 02:54:31,904 INFO L226 Difference]: Without dead ends: 99 [2024-11-28 02:54:31,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:54:31,908 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:31,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 373 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:54:31,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-28 02:54:31,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2024-11-28 02:54:31,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 76 states have (on average 1.263157894736842) internal successors, (96), 76 states have internal predecessors, (96), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 02:54:31,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 136 transitions. [2024-11-28 02:54:31,929 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 136 transitions. Word has length 148 [2024-11-28 02:54:31,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:31,930 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 136 transitions. [2024-11-28 02:54:31,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 136 transitions. [2024-11-28 02:54:31,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 02:54:31,938 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:31,939 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:31,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:54:32,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:32,140 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:32,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:32,142 INFO L85 PathProgramCache]: Analyzing trace with hash -569150696, now seen corresponding path program 1 times [2024-11-28 02:54:32,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:32,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720871612] [2024-11-28 02:54:32,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:32,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:32,501 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-28 02:54:32,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:32,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720871612] [2024-11-28 02:54:32,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720871612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:32,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512214461] [2024-11-28 02:54:32,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:32,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:32,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:32,510 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:32,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:54:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:32,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:54:32,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:32,838 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:54:32,838 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:54:32,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512214461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:32,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:54:32,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-11-28 02:54:32,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054100330] [2024-11-28 02:54:32,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:32,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:54:32,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:32,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:54:32,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:54:32,845 INFO L87 Difference]: Start difference. First operand 98 states and 136 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:32,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:32,884 INFO L93 Difference]: Finished difference Result 195 states and 272 transitions. [2024-11-28 02:54:32,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:54:32,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2024-11-28 02:54:32,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:32,888 INFO L225 Difference]: With dead ends: 195 [2024-11-28 02:54:32,888 INFO L226 Difference]: Without dead ends: 100 [2024-11-28 02:54:32,889 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 149 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 02:54:32,890 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 0 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:32,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 373 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:54:32,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-28 02:54:32,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-28 02:54:32,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 02:54:32,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 138 transitions. [2024-11-28 02:54:32,901 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 138 transitions. Word has length 148 [2024-11-28 02:54:32,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:32,902 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 138 transitions. [2024-11-28 02:54:32,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:32,902 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 138 transitions. [2024-11-28 02:54:32,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 02:54:32,905 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:32,905 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:32,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:54:33,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:33,106 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:33,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:33,107 INFO L85 PathProgramCache]: Analyzing trace with hash 369047939, now seen corresponding path program 1 times [2024-11-28 02:54:33,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:33,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813733896] [2024-11-28 02:54:33,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:33,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-28 02:54:33,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:33,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813733896] [2024-11-28 02:54:33,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813733896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:33,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785144298] [2024-11-28 02:54:33,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:33,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:33,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:33,480 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:33,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:54:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:33,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:54:33,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:54:33,793 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:54:33,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785144298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:33,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:54:33,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-28 02:54:33,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134044977] [2024-11-28 02:54:33,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:33,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:54:33,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:33,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:54:33,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:54:33,798 INFO L87 Difference]: Start difference. First operand 100 states and 138 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:33,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:33,855 INFO L93 Difference]: Finished difference Result 200 states and 277 transitions. [2024-11-28 02:54:33,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:54:33,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 150 [2024-11-28 02:54:33,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:33,858 INFO L225 Difference]: With dead ends: 200 [2024-11-28 02:54:33,859 INFO L226 Difference]: Without dead ends: 103 [2024-11-28 02:54:33,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 151 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 02:54:33,860 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 0 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:33,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 491 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:54:33,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-28 02:54:33,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-28 02:54:33,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 81 states have internal predecessors, (101), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 02:54:33,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 141 transitions. [2024-11-28 02:54:33,883 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 141 transitions. Word has length 150 [2024-11-28 02:54:33,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:33,883 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 141 transitions. [2024-11-28 02:54:33,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:33,884 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 141 transitions. [2024-11-28 02:54:33,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 02:54:33,888 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:33,888 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:33,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:54:34,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:34,089 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:34,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:34,090 INFO L85 PathProgramCache]: Analyzing trace with hash 846089747, now seen corresponding path program 1 times [2024-11-28 02:54:34,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:34,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048597909] [2024-11-28 02:54:34,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:34,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:34,634 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:54:34,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:34,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048597909] [2024-11-28 02:54:34,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048597909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:34,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:34,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:54:34,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118085678] [2024-11-28 02:54:34,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:34,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:54:34,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:34,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:54:34,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:54:34,641 INFO L87 Difference]: Start difference. First operand 103 states and 141 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:34,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:34,835 INFO L93 Difference]: Finished difference Result 203 states and 279 transitions. [2024-11-28 02:54:34,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:54:34,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 150 [2024-11-28 02:54:34,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:34,840 INFO L225 Difference]: With dead ends: 203 [2024-11-28 02:54:34,840 INFO L226 Difference]: Without dead ends: 103 [2024-11-28 02:54:34,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 02:54:34,844 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:34,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 321 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:54:34,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-28 02:54:34,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-28 02:54:34,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 81 states have internal predecessors, (100), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 02:54:34,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 140 transitions. [2024-11-28 02:54:34,857 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 140 transitions. Word has length 150 [2024-11-28 02:54:34,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:34,858 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 140 transitions. [2024-11-28 02:54:34,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:34,858 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 140 transitions. [2024-11-28 02:54:34,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 02:54:34,861 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:34,861 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:34,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:54:34,861 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:34,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:34,862 INFO L85 PathProgramCache]: Analyzing trace with hash -174978607, now seen corresponding path program 1 times [2024-11-28 02:54:34,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:34,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215954206] [2024-11-28 02:54:34,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:34,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:35,328 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:54:35,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:35,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215954206] [2024-11-28 02:54:35,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215954206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:35,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:35,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:54:35,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111245391] [2024-11-28 02:54:35,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:35,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:54:35,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:35,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:54:35,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:54:35,334 INFO L87 Difference]: Start difference. First operand 103 states and 140 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:35,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:35,360 INFO L93 Difference]: Finished difference Result 203 states and 277 transitions. [2024-11-28 02:54:35,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:54:35,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 150 [2024-11-28 02:54:35,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:35,363 INFO L225 Difference]: With dead ends: 203 [2024-11-28 02:54:35,363 INFO L226 Difference]: Without dead ends: 103 [2024-11-28 02:54:35,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:54:35,366 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:35,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 251 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:54:35,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-28 02:54:35,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-28 02:54:35,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 81 states have (on average 1.2222222222222223) internal successors, (99), 81 states have internal predecessors, (99), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 02:54:35,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 139 transitions. [2024-11-28 02:54:35,383 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 139 transitions. Word has length 150 [2024-11-28 02:54:35,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:35,387 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 139 transitions. [2024-11-28 02:54:35,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:35,387 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 139 transitions. [2024-11-28 02:54:35,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-28 02:54:35,389 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:35,389 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:35,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:54:35,390 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:35,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:35,391 INFO L85 PathProgramCache]: Analyzing trace with hash 317740726, now seen corresponding path program 1 times [2024-11-28 02:54:35,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:35,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420674765] [2024-11-28 02:54:35,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:35,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:35,990 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:54:35,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:35,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420674765] [2024-11-28 02:54:35,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420674765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:35,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:35,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:54:35,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498810296] [2024-11-28 02:54:35,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:35,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:54:35,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:35,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:54:35,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:54:35,995 INFO L87 Difference]: Start difference. First operand 103 states and 139 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:36,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:36,164 INFO L93 Difference]: Finished difference Result 203 states and 275 transitions. [2024-11-28 02:54:36,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:54:36,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 152 [2024-11-28 02:54:36,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:36,170 INFO L225 Difference]: With dead ends: 203 [2024-11-28 02:54:36,170 INFO L226 Difference]: Without dead ends: 103 [2024-11-28 02:54:36,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 02:54:36,172 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:36,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 317 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:54:36,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-28 02:54:36,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-28 02:54:36,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 81 states have internal predecessors, (98), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 02:54:36,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 138 transitions. [2024-11-28 02:54:36,185 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 138 transitions. Word has length 152 [2024-11-28 02:54:36,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:36,190 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 138 transitions. [2024-11-28 02:54:36,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:36,190 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 138 transitions. [2024-11-28 02:54:36,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-28 02:54:36,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:36,192 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:36,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:54:36,193 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:36,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:36,194 INFO L85 PathProgramCache]: Analyzing trace with hash 740442552, now seen corresponding path program 1 times [2024-11-28 02:54:36,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:36,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215154117] [2024-11-28 02:54:36,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:36,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:40,669 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:54:40,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:40,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215154117] [2024-11-28 02:54:40,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215154117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:40,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:40,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 02:54:40,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918211446] [2024-11-28 02:54:40,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:40,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:54:40,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:40,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:54:40,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:54:40,673 INFO L87 Difference]: Start difference. First operand 103 states and 138 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:42,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:42,440 INFO L93 Difference]: Finished difference Result 361 states and 490 transitions. [2024-11-28 02:54:42,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:54:42,441 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 152 [2024-11-28 02:54:42,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:42,444 INFO L225 Difference]: With dead ends: 361 [2024-11-28 02:54:42,444 INFO L226 Difference]: Without dead ends: 261 [2024-11-28 02:54:42,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:54:42,446 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 174 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:42,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 720 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 02:54:42,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-28 02:54:42,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 197. [2024-11-28 02:54:42,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 154 states have (on average 1.2012987012987013) internal successors, (185), 154 states have internal predecessors, (185), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-28 02:54:42,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 265 transitions. [2024-11-28 02:54:42,483 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 265 transitions. Word has length 152 [2024-11-28 02:54:42,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:42,484 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 265 transitions. [2024-11-28 02:54:42,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:42,484 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 265 transitions. [2024-11-28 02:54:42,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-28 02:54:42,488 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:42,489 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:42,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:54:42,489 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:42,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:42,490 INFO L85 PathProgramCache]: Analyzing trace with hash 855956619, now seen corresponding path program 1 times [2024-11-28 02:54:42,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:42,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341653169] [2024-11-28 02:54:42,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:42,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:45,038 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:54:45,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:45,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341653169] [2024-11-28 02:54:45,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341653169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:45,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:45,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 02:54:45,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943577172] [2024-11-28 02:54:45,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:45,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:54:45,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:45,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:54:45,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:54:45,041 INFO L87 Difference]: Start difference. First operand 197 states and 265 transitions. Second operand has 11 states, 10 states have (on average 5.6) internal successors, (56), 11 states have internal predecessors, (56), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 02:54:46,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:46,108 INFO L93 Difference]: Finished difference Result 363 states and 492 transitions. [2024-11-28 02:54:46,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:54:46,109 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.6) internal successors, (56), 11 states have internal predecessors, (56), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 153 [2024-11-28 02:54:46,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:46,112 INFO L225 Difference]: With dead ends: 363 [2024-11-28 02:54:46,112 INFO L226 Difference]: Without dead ends: 263 [2024-11-28 02:54:46,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:54:46,113 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 106 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:46,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 988 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:54:46,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-28 02:54:46,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 101. [2024-11-28 02:54:46,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 79 states have internal predecessors, (95), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 02:54:46,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 135 transitions. [2024-11-28 02:54:46,136 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 135 transitions. Word has length 153 [2024-11-28 02:54:46,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:46,137 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 135 transitions. [2024-11-28 02:54:46,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.6) internal successors, (56), 11 states have internal predecessors, (56), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 02:54:46,138 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 135 transitions. [2024-11-28 02:54:46,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-28 02:54:46,140 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:46,141 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:46,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:54:46,141 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:46,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:46,142 INFO L85 PathProgramCache]: Analyzing trace with hash -265451400, now seen corresponding path program 1 times [2024-11-28 02:54:46,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:46,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131807349] [2024-11-28 02:54:46,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:46,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:54:47,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:47,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131807349] [2024-11-28 02:54:47,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131807349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:47,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:47,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:54:47,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280672643] [2024-11-28 02:54:47,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:47,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:54:47,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:47,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:54:47,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:54:47,602 INFO L87 Difference]: Start difference. First operand 101 states and 135 transitions. Second operand has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 02:54:48,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:48,076 INFO L93 Difference]: Finished difference Result 252 states and 332 transitions. [2024-11-28 02:54:48,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:54:48,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2024-11-28 02:54:48,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:48,079 INFO L225 Difference]: With dead ends: 252 [2024-11-28 02:54:48,080 INFO L226 Difference]: Without dead ends: 154 [2024-11-28 02:54:48,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:54:48,082 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 48 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:48,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 382 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:54:48,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-28 02:54:48,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 151. [2024-11-28 02:54:48,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 124 states have (on average 1.2016129032258065) internal successors, (149), 125 states have internal predecessors, (149), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-28 02:54:48,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 197 transitions. [2024-11-28 02:54:48,101 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 197 transitions. Word has length 154 [2024-11-28 02:54:48,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:48,102 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 197 transitions. [2024-11-28 02:54:48,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 02:54:48,103 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 197 transitions. [2024-11-28 02:54:48,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-28 02:54:48,105 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:48,105 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:48,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:54:48,105 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:48,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:48,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1881220598, now seen corresponding path program 1 times [2024-11-28 02:54:48,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:48,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329430617] [2024-11-28 02:54:48,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:48,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:54:48,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:48,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329430617] [2024-11-28 02:54:48,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329430617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:48,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:48,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:54:48,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194766612] [2024-11-28 02:54:48,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:48,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:54:48,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:48,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:54:48,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:54:48,483 INFO L87 Difference]: Start difference. First operand 151 states and 197 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:48,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:48,507 INFO L93 Difference]: Finished difference Result 299 states and 391 transitions. [2024-11-28 02:54:48,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:54:48,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2024-11-28 02:54:48,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:48,511 INFO L225 Difference]: With dead ends: 299 [2024-11-28 02:54:48,511 INFO L226 Difference]: Without dead ends: 151 [2024-11-28 02:54:48,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:54:48,512 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:48,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 245 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:54:48,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-28 02:54:48,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2024-11-28 02:54:48,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 124 states have (on average 1.185483870967742) internal successors, (147), 125 states have internal predecessors, (147), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-28 02:54:48,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 195 transitions. [2024-11-28 02:54:48,530 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 195 transitions. Word has length 154 [2024-11-28 02:54:48,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:48,531 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 195 transitions. [2024-11-28 02:54:48,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:48,532 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 195 transitions. [2024-11-28 02:54:48,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 02:54:48,534 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:48,534 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:48,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:54:48,535 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:48,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:48,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1819948433, now seen corresponding path program 1 times [2024-11-28 02:54:48,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:48,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928927542] [2024-11-28 02:54:48,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:48,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:50,610 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:54:50,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:50,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928927542] [2024-11-28 02:54:50,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928927542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:50,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:50,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:54:50,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425028878] [2024-11-28 02:54:50,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:50,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:54:50,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:50,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:54:50,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:54:50,614 INFO L87 Difference]: Start difference. First operand 151 states and 195 transitions. Second operand has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 02:54:51,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:51,350 INFO L93 Difference]: Finished difference Result 185 states and 236 transitions. [2024-11-28 02:54:51,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:54:51,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 156 [2024-11-28 02:54:51,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:51,354 INFO L225 Difference]: With dead ends: 185 [2024-11-28 02:54:51,354 INFO L226 Difference]: Without dead ends: 183 [2024-11-28 02:54:51,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:54:51,356 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 49 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:51,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 673 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:54:51,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-28 02:54:51,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2024-11-28 02:54:51,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 145 states have (on average 1.1586206896551725) internal successors, (168), 147 states have internal predecessors, (168), 32 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-28 02:54:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 232 transitions. [2024-11-28 02:54:51,401 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 232 transitions. Word has length 156 [2024-11-28 02:54:51,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:51,402 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 232 transitions. [2024-11-28 02:54:51,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 02:54:51,403 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 232 transitions. [2024-11-28 02:54:51,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 02:54:51,406 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:51,406 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:51,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:54:51,406 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:51,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:51,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1818101391, now seen corresponding path program 1 times [2024-11-28 02:54:51,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:51,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048886691] [2024-11-28 02:54:51,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:51,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:54:53,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:53,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048886691] [2024-11-28 02:54:53,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048886691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:53,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:53,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:54:53,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975421592] [2024-11-28 02:54:53,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:53,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:54:53,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:53,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:54:53,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:54:53,463 INFO L87 Difference]: Start difference. First operand 182 states and 232 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:54,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:54,417 INFO L93 Difference]: Finished difference Result 482 states and 618 transitions. [2024-11-28 02:54:54,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:54:54,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 156 [2024-11-28 02:54:54,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:54,421 INFO L225 Difference]: With dead ends: 482 [2024-11-28 02:54:54,421 INFO L226 Difference]: Without dead ends: 324 [2024-11-28 02:54:54,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:54:54,422 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 113 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:54,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 511 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:54:54,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-28 02:54:54,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 306. [2024-11-28 02:54:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 233 states have (on average 1.1330472103004292) internal successors, (264), 235 states have internal predecessors, (264), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-28 02:54:54,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 392 transitions. [2024-11-28 02:54:54,470 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 392 transitions. Word has length 156 [2024-11-28 02:54:54,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:54,470 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 392 transitions. [2024-11-28 02:54:54,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:54,471 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 392 transitions. [2024-11-28 02:54:54,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 02:54:54,472 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:54,473 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:54,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:54:54,473 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:54,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:54,474 INFO L85 PathProgramCache]: Analyzing trace with hash -43094029, now seen corresponding path program 1 times [2024-11-28 02:54:54,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:54,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924653650] [2024-11-28 02:54:54,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:54,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:54:54,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:54,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924653650] [2024-11-28 02:54:54,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924653650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:54,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:54,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:54:54,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197757895] [2024-11-28 02:54:54,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:54,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:54:54,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:54,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:54:54,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:54:54,841 INFO L87 Difference]: Start difference. First operand 306 states and 392 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:55,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:55,156 INFO L93 Difference]: Finished difference Result 583 states and 744 transitions. [2024-11-28 02:54:55,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:54:55,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 156 [2024-11-28 02:54:55,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:55,159 INFO L225 Difference]: With dead ends: 583 [2024-11-28 02:54:55,159 INFO L226 Difference]: Without dead ends: 329 [2024-11-28 02:54:55,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:54:55,163 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 95 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:55,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 506 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:54:55,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-11-28 02:54:55,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 306. [2024-11-28 02:54:55,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 233 states have (on average 1.1201716738197425) internal successors, (261), 235 states have internal predecessors, (261), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-28 02:54:55,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 389 transitions. [2024-11-28 02:54:55,220 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 389 transitions. Word has length 156 [2024-11-28 02:54:55,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:55,221 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 389 transitions. [2024-11-28 02:54:55,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:55,221 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 389 transitions. [2024-11-28 02:54:55,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 02:54:55,223 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:55,223 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:55,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 02:54:55,224 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:55,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:55,224 INFO L85 PathProgramCache]: Analyzing trace with hash 636964341, now seen corresponding path program 1 times [2024-11-28 02:54:55,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:55,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135638231] [2024-11-28 02:54:55,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:55,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-28 02:54:55,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:55,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135638231] [2024-11-28 02:54:55,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135638231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:54:55,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096537461] [2024-11-28 02:54:55,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:55,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:55,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:55,460 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:55,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:54:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:55,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:54:55,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:55,726 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:54:55,726 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:54:55,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096537461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:55,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:54:55,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-28 02:54:55,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232229459] [2024-11-28 02:54:55,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:55,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:54:55,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:55,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:54:55,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:54:55,729 INFO L87 Difference]: Start difference. First operand 306 states and 389 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:55,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:55,798 INFO L93 Difference]: Finished difference Result 569 states and 720 transitions. [2024-11-28 02:54:55,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:54:55,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 156 [2024-11-28 02:54:55,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:55,802 INFO L225 Difference]: With dead ends: 569 [2024-11-28 02:54:55,802 INFO L226 Difference]: Without dead ends: 315 [2024-11-28 02:54:55,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 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 02:54:55,804 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 0 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:55,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 472 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:54:55,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-28 02:54:55,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2024-11-28 02:54:55,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 242 states have (on average 1.115702479338843) internal successors, (270), 244 states have internal predecessors, (270), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-28 02:54:55,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 398 transitions. [2024-11-28 02:54:55,860 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 398 transitions. Word has length 156 [2024-11-28 02:54:55,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:55,860 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 398 transitions. [2024-11-28 02:54:55,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:55,861 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 398 transitions. [2024-11-28 02:54:55,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-28 02:54:55,862 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:55,863 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:55,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:54:56,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:54:56,063 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:56,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:56,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1597318724, now seen corresponding path program 1 times [2024-11-28 02:54:56,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:56,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614598482] [2024-11-28 02:54:56,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:56,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:54:57,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:57,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614598482] [2024-11-28 02:54:57,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614598482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:57,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:57,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:54:57,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344071432] [2024-11-28 02:54:57,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:57,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:54:57,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:57,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:54:57,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:54:57,087 INFO L87 Difference]: Start difference. First operand 315 states and 398 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:57,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:57,712 INFO L93 Difference]: Finished difference Result 498 states and 625 transitions. [2024-11-28 02:54:57,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:54:57,713 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2024-11-28 02:54:57,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:57,717 INFO L225 Difference]: With dead ends: 498 [2024-11-28 02:54:57,717 INFO L226 Difference]: Without dead ends: 334 [2024-11-28 02:54:57,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:54:57,719 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 63 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:57,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 952 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:54:57,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-28 02:54:57,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 328. [2024-11-28 02:54:57,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 250 states have (on average 1.112) internal successors, (278), 252 states have internal predecessors, (278), 68 states have call successors, (68), 9 states have call predecessors, (68), 9 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-28 02:54:57,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 414 transitions. [2024-11-28 02:54:57,777 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 414 transitions. Word has length 157 [2024-11-28 02:54:57,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:57,778 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 414 transitions. [2024-11-28 02:54:57,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:54:57,778 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 414 transitions. [2024-11-28 02:54:57,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-28 02:54:57,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:57,781 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:57,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:54:57,781 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:57,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:57,782 INFO L85 PathProgramCache]: Analyzing trace with hash -549129532, now seen corresponding path program 1 times [2024-11-28 02:54:57,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:57,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444449686] [2024-11-28 02:54:57,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:57,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:58,887 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:54:58,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:58,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444449686] [2024-11-28 02:54:58,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444449686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:58,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:58,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:54:58,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240119824] [2024-11-28 02:54:58,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:58,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:54:58,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:58,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:54:58,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:54:58,890 INFO L87 Difference]: Start difference. First operand 328 states and 414 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 02:54:59,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:59,292 INFO L93 Difference]: Finished difference Result 511 states and 639 transitions. [2024-11-28 02:54:59,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:54:59,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 157 [2024-11-28 02:54:59,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:59,298 INFO L225 Difference]: With dead ends: 511 [2024-11-28 02:54:59,298 INFO L226 Difference]: Without dead ends: 334 [2024-11-28 02:54:59,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:54:59,300 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 51 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:59,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 529 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:54:59,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-28 02:54:59,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 280. [2024-11-28 02:54:59,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 211 states have (on average 1.1042654028436019) internal successors, (233), 212 states have internal predecessors, (233), 60 states have call successors, (60), 8 states have call predecessors, (60), 8 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 02:54:59,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 353 transitions. [2024-11-28 02:54:59,338 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 353 transitions. Word has length 157 [2024-11-28 02:54:59,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:59,338 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 353 transitions. [2024-11-28 02:54:59,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 02:54:59,339 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 353 transitions. [2024-11-28 02:54:59,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 02:54:59,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:59,341 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:54:59,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 02:54:59,341 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:59,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:59,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1788976646, now seen corresponding path program 1 times [2024-11-28 02:54:59,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:59,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067627811] [2024-11-28 02:54:59,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:59,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:54:59,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382379989] [2024-11-28 02:54:59,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:59,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:54:59,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:54:59,548 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:54:59,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:54:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:59,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-28 02:54:59,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:54:59,941 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 80 treesize of output 79 [2024-11-28 02:55:00,417 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 99 treesize of output 94 [2024-11-28 02:55:01,399 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 105 treesize of output 98 [2024-11-28 02:55:02,465 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 111 treesize of output 102 [2024-11-28 02:55:03,689 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 117 treesize of output 106 [2024-11-28 02:55:04,983 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 123 treesize of output 110 [2024-11-28 02:55:06,414 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 129 treesize of output 114 [2024-11-28 02:55:08,420 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 135 treesize of output 118 [2024-11-28 02:55:13,339 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 153 treesize of output 132 [2024-11-28 02:55:16,965 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 158 treesize of output 135 [2024-11-28 02:55:27,325 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 201 treesize of output 168 [2024-11-28 02:55:48,149 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 268 treesize of output 229 [2024-11-28 02:56:26,046 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 281 treesize of output 231 [2024-11-28 02:56:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 6 proven. 708 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-28 02:56:29,356 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:56:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:56:43,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:43,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067627811] [2024-11-28 02:56:43,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:56:43,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382379989] [2024-11-28 02:56:43,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382379989] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:56:43,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:56:43,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [20] total 24 [2024-11-28 02:56:43,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604893995] [2024-11-28 02:56:43,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:56:43,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:56:43,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:43,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:56:43,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=407, Unknown=7, NotChecked=0, Total=552 [2024-11-28 02:56:43,953 INFO L87 Difference]: Start difference. First operand 280 states and 353 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:56:50,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:56:50,654 INFO L93 Difference]: Finished difference Result 649 states and 794 transitions. [2024-11-28 02:56:50,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:56:50,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2024-11-28 02:56:50,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:56:50,658 INFO L225 Difference]: With dead ends: 649 [2024-11-28 02:56:50,658 INFO L226 Difference]: Without dead ends: 421 [2024-11-28 02:56:50,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 65.4s TimeCoverageRelationStatistics Valid=143, Invalid=450, Unknown=7, NotChecked=0, Total=600 [2024-11-28 02:56:50,660 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 52 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:56:50,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 325 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 02:56:50,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-28 02:56:50,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 283. [2024-11-28 02:56:50,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 236 states have (on average 1.1059322033898304) internal successors, (261), 236 states have internal predecessors, (261), 40 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-28 02:56:50,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 341 transitions. [2024-11-28 02:56:50,692 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 341 transitions. Word has length 158 [2024-11-28 02:56:50,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:56:50,693 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 341 transitions. [2024-11-28 02:56:50,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 02:56:50,693 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 341 transitions. [2024-11-28 02:56:50,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-28 02:56:50,695 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:56:50,695 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:56:50,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:56:50,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f221e1-5564-480c-885b-93b8d57b027a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:56:50,897 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:56:50,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:50,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1931000639, now seen corresponding path program 1 times [2024-11-28 02:56:50,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:50,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039814642] [2024-11-28 02:56:50,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:50,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:56:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 02:56:52,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:56:52,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039814642] [2024-11-28 02:56:52,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039814642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:56:52,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:56:52,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:56:52,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432661265] [2024-11-28 02:56:52,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:56:52,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:56:52,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:56:52,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:56:52,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:56:52,854 INFO L87 Difference]: Start difference. First operand 283 states and 341 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 02:56:53,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:56:53,912 INFO L93 Difference]: Finished difference Result 515 states and 615 transitions. [2024-11-28 02:56:53,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:56:53,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2024-11-28 02:56:53,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:56:53,915 INFO L225 Difference]: With dead ends: 515 [2024-11-28 02:56:53,915 INFO L226 Difference]: Without dead ends: 350 [2024-11-28 02:56:53,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:56:53,917 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 42 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:56:53,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 554 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:56:53,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-28 02:56:53,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 313. [2024-11-28 02:56:53,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 266 states have (on average 1.1015037593984962) internal successors, (293), 266 states have internal predecessors, (293), 40 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-28 02:56:53,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 373 transitions. [2024-11-28 02:56:53,950 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 373 transitions. Word has length 159 [2024-11-28 02:56:53,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:56:53,951 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 373 transitions. [2024-11-28 02:56:53,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 02:56:53,951 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 373 transitions. [2024-11-28 02:56:53,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-28 02:56:53,952 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:56:53,953 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:56:53,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 02:56:53,953 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:56:53,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:56:53,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1883847506, now seen corresponding path program 1 times [2024-11-28 02:56:53,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:56:53,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947068173] [2024-11-28 02:56:53,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:56:53,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:56:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:00:24,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:24,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947068173] [2024-11-28 03:00:24,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947068173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:24,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:24,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:00:24,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398989279] [2024-11-28 03:00:24,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:24,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:00:24,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:24,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:00:24,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:00:24,730 INFO L87 Difference]: Start difference. First operand 313 states and 373 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:00:26,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:26,559 INFO L93 Difference]: Finished difference Result 580 states and 698 transitions. [2024-11-28 03:00:26,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:00:26,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2024-11-28 03:00:26,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:26,563 INFO L225 Difference]: With dead ends: 580 [2024-11-28 03:00:26,563 INFO L226 Difference]: Without dead ends: 385 [2024-11-28 03:00:26,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:00:26,566 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 91 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:26,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 619 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 03:00:26,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-28 03:00:26,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 198. [2024-11-28 03:00:26,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 174 states have (on average 1.1091954022988506) internal successors, (193), 174 states have internal predecessors, (193), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 03:00:26,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 233 transitions. [2024-11-28 03:00:26,590 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 233 transitions. Word has length 159 [2024-11-28 03:00:26,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:26,591 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 233 transitions. [2024-11-28 03:00:26,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:00:26,591 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 233 transitions. [2024-11-28 03:00:26,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 03:00:26,592 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:26,592 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:26,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 03:00:26,593 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:00:26,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:26,593 INFO L85 PathProgramCache]: Analyzing trace with hash -621184161, now seen corresponding path program 1 times [2024-11-28 03:00:26,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:26,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857073182] [2024-11-28 03:00:26,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:26,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:00:32,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:32,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857073182] [2024-11-28 03:00:32,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857073182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:32,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:32,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 03:00:32,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652237932] [2024-11-28 03:00:32,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:32,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:00:32,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:32,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:00:32,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:00:32,480 INFO L87 Difference]: Start difference. First operand 198 states and 233 transitions. Second operand has 17 states, 15 states have (on average 4.2) internal successors, (63), 17 states have internal predecessors, (63), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-28 03:00:38,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:38,605 INFO L93 Difference]: Finished difference Result 598 states and 707 transitions. [2024-11-28 03:00:38,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:00:38,606 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.2) internal successors, (63), 17 states have internal predecessors, (63), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) Word has length 160 [2024-11-28 03:00:38,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:38,608 INFO L225 Difference]: With dead ends: 598 [2024-11-28 03:00:38,608 INFO L226 Difference]: Without dead ends: 403 [2024-11-28 03:00:38,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2024-11-28 03:00:38,610 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 124 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:38,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 898 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-28 03:00:38,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-11-28 03:00:38,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 393. [2024-11-28 03:00:38,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 330 states have (on average 1.0909090909090908) internal successors, (360), 331 states have internal predecessors, (360), 53 states have call successors, (53), 9 states have call predecessors, (53), 9 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-28 03:00:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 466 transitions. [2024-11-28 03:00:38,663 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 466 transitions. Word has length 160 [2024-11-28 03:00:38,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:38,663 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 466 transitions. [2024-11-28 03:00:38,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.2) internal successors, (63), 17 states have internal predecessors, (63), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-28 03:00:38,663 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 466 transitions. [2024-11-28 03:00:38,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 03:00:38,665 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:38,665 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:38,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 03:00:38,665 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:00:38,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:38,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1207990175, now seen corresponding path program 1 times [2024-11-28 03:00:38,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:38,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450884194] [2024-11-28 03:00:38,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:38,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:40,212 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:00:40,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:40,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450884194] [2024-11-28 03:00:40,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450884194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:40,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:40,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:00:40,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856130952] [2024-11-28 03:00:40,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:40,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:00:40,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:40,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:00:40,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:00:40,214 INFO L87 Difference]: Start difference. First operand 393 states and 466 transitions. Second operand has 8 states, 5 states have (on average 12.6) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-28 03:00:42,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:42,180 INFO L93 Difference]: Finished difference Result 908 states and 1073 transitions. [2024-11-28 03:00:42,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:00:42,181 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 12.6) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 4 states have call successors, (20) Word has length 160 [2024-11-28 03:00:42,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:42,185 INFO L225 Difference]: With dead ends: 908 [2024-11-28 03:00:42,185 INFO L226 Difference]: Without dead ends: 518 [2024-11-28 03:00:42,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:00:42,187 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 73 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:42,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 776 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 03:00:42,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-11-28 03:00:42,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 514. [2024-11-28 03:00:42,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 428 states have (on average 1.0771028037383177) internal successors, (461), 430 states have internal predecessors, (461), 72 states have call successors, (72), 13 states have call predecessors, (72), 13 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-28 03:00:42,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 605 transitions. [2024-11-28 03:00:42,266 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 605 transitions. Word has length 160 [2024-11-28 03:00:42,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:42,266 INFO L471 AbstractCegarLoop]: Abstraction has 514 states and 605 transitions. [2024-11-28 03:00:42,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 12.6) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-28 03:00:42,266 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 605 transitions. [2024-11-28 03:00:42,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 03:00:42,268 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:42,268 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:42,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 03:00:42,268 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:00:42,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:42,269 INFO L85 PathProgramCache]: Analyzing trace with hash 80415713, now seen corresponding path program 1 times [2024-11-28 03:00:42,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:42,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203762004] [2024-11-28 03:00:42,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:42,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:00:43,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:43,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203762004] [2024-11-28 03:00:43,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203762004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:43,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:43,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:00:43,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142372683] [2024-11-28 03:00:43,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:43,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:00:43,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:43,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:00:43,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:00:43,391 INFO L87 Difference]: Start difference. First operand 514 states and 605 transitions. Second operand has 8 states, 5 states have (on average 12.6) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-28 03:00:45,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:45,033 INFO L93 Difference]: Finished difference Result 1150 states and 1358 transitions. [2024-11-28 03:00:45,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:00:45,033 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 12.6) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 4 states have call successors, (20) Word has length 160 [2024-11-28 03:00:45,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:45,037 INFO L225 Difference]: With dead ends: 1150 [2024-11-28 03:00:45,037 INFO L226 Difference]: Without dead ends: 639 [2024-11-28 03:00:45,038 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:00:45,039 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 75 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:45,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 439 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:00:45,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2024-11-28 03:00:45,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 566. [2024-11-28 03:00:45,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 461 states have (on average 1.0650759219088937) internal successors, (491), 464 states have internal predecessors, (491), 88 states have call successors, (88), 16 states have call predecessors, (88), 16 states have return successors, (88), 85 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-28 03:00:45,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 667 transitions. [2024-11-28 03:00:45,129 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 667 transitions. Word has length 160 [2024-11-28 03:00:45,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:45,129 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 667 transitions. [2024-11-28 03:00:45,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 12.6) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-28 03:00:45,130 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 667 transitions. [2024-11-28 03:00:45,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 03:00:45,131 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:45,131 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:45,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 03:00:45,132 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:00:45,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash -506390301, now seen corresponding path program 1 times [2024-11-28 03:00:45,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:45,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101656861] [2024-11-28 03:00:45,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:45,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat